Maths-

General

Easy

Question

Three normals are drawn to the parabola $y to the power of 2 end exponent equals 4 x$ from the point (c, 0) These normals are real and distinct when

c=0
c=1
c=2
c=3

hint Hint:

A normal in geometry is a piece of geometry that is perpendicular to another piece of geometry, such as a line, ray, or vector. For instance, the (infinite) line perpendicular to the tangent line to the curve at the point is the normal line to a plane curve at the point. Here we have to find these normals are real and distinct at what c.

The correct answer is: c=3

At a specific point on a curve, tangents and normals behave just like any other straight lines. The normal runs perpendicular to the curve, and a tangent is parallel to the curve at the point. Like any other straight line, the equation of tangent and normal can be evaluated.
Here we have given parabola of y² = 4x.
$N o w space w e space k n o w space t h a t space a n y space n o r m a l space o f space t h e space p a r a b o l a space i s space g i v e n space b y space t h e space f o r m u l a colon y equals m x minus 2 a m minus a m cubed I n space t h i s space c a s e space a equals 1. N o w space t h a t space w e space h a v e space g i v e n space t h a t space i t space p a s s e s space t h r o u g h space t h e space p o i n t space left parenthesis c comma 0 right parenthesis comma space s o space w e space g e t colon m left parenthesis m squared plus 2 minus c right parenthesis equals 0 N o w space i n space o r d e r space t o space g e t space n o r m a l space a s space r e a l space a n d space d i s t i n c t comma space w e space h a v e colon 2 minus c less than 0 c greater than 2 S o space t h e space v a l u e space o f space c space i s space 3.$

So here we used the concept of tangents and normals, we found the slope and then went to proceed with the final answer. The normal to a parabola is perpendicular to the tangent of the parabola. So here the value of c is 3.

The points of contact of the vertical tangents to $x equals 2 minus 3 blank s i n blank theta comma$ $y equals 3 plus 2 blank c o s blank theta$ are

Maths-General

General

maths-

The curve $y equals a x to the power of 3 end exponent plus b x to the power of 2 end exponent plus c x plus 5$ touches the $x$ ‐axis at P(-2,0) and cuts the y ‐axis at a point $Q left parenthesis O comma 5 right parenthesis$ where its gradient is 3 Then a+2b+c=-

maths-General

General

maths-

If $open vertical bar table row alpha beta row gamma cell negative alpha end cell end table close vertical bar$ is to be square root of a determinant of the two rowed unit matrix, then $alpha comma beta comma$ $gamma$ should satisfy the relation

maths-General

General

maths-

Matrix Ais given by $A equals open curly brackets table attributes columnalign left end attributes row 3 11 row 2 8 end table close curly brackets$ then the determinant of $A to the power of 2011 end exponent minus 5 A to the power of 2010 end exponent$ is

maths-General

General

maths-

If $A open parentheses table row 1 3 4 row 3 cell negative 1 end cell 5 row cell negative 2 end cell 4 cell negative 3 end cell end table close parentheses equals open parentheses table row 3 cell negative 1 end cell 5 row 1 3 4 row cell plus 4 end cell cell negative 8 end cell 6 end table close parentheses$ then $A equals negative times$

maths-General

General

maths-

If $open vertical bar table row cell a blank b blank 1 end cell row cell b blank c blank 1 end cell row cell c blank a blank 1 end cell end table close vertical bar equals 2010 text andif end text open vertical bar table row cell c minus a end cell cell c minus b end cell cell a b end cell row cell a minus b end cell cell a minus c end cell cell b c end cell row cell b minus c end cell cell b minus a end cell cell c a end cell end table close vertical bar minus open vertical bar table row cell c minus a end cell cell c minus b end cell cell c to the power of 2 end exponent end cell row cell a minus b end cell cell a minus c end cell cell a to the power of 2 end exponent end cell row cell b minus c end cell cell b minus a end cell cell b to the power of 2 end exponent end cell end table close vertical bar equals p$ then the number of positive divisors of the number p is

maths-General

General

maths-

The number of positive integral solutions of the equation $open vertical bar table row cell y to the power of 3 end exponent plus 1 end cell cell y to the power of 2 end exponent z end cell cell y to the power of 2 end exponent x end cell row cell y z to the power of 2 end exponent end cell cell z to the power of 3 end exponent plus 1 end cell cell z to the power of 2 end exponent x end cell row cell y x to the power of 2 end exponent end cell cell X to the power of 2 end exponent Z end cell cell x to the power of 3 end exponent plus 1 end cell end table close vertical bar equals 11$ is

maths-General

General

maths-

If $A comma$ $B comma$ $C comma$ $D$ be real matrices (not necessasrily square) such that $A to the power of T end exponent equals B C D comma$ $B to the power of T end exponent equals C D A comma$ $C to the power of T end exponent equals D A B comma$ $D to the power of T end exponent equals A B C$ forthematrix $S equals A B C D$ consider the statements $I colon S to the power of 3 end exponent equals S$ $capital pi colon S to the power of 2 end exponent equals S to the power of 4 end exponent$

maths-General

General

maths-

If $l o g subscript 4 end subscript left parenthesis x plus 2 y right parenthesis plus l o g subscript 4 end subscript left parenthesis x minus 2 y right parenthesis equals 1$ , then
Statement $negative 1 colon left parenthesis vertical line x vertical line minus vertical line y vertical line right parenthesis subscript blank m i n blank end subscript equals square root of 3$ because
Statement $negative 2$ :A.M $greater or equal than G. M$ for $R to the power of plus end exponent.$

maths-General

General

maths-

If $alpha element of left parenthesis negative fraction numerator pi over denominator 2 end fraction comma 0 right parenthesis$ , then the value of $t a n to the power of negative 1 end exponent left parenthesis blank c o t blank alpha right parenthesis minus c o t to the power of negative 1 end exponent left parenthesis blank t a n blank alpha right parenthesis$ is equal to

maths-General

General

maths-

The minimum value of $left parenthesis s e c to the power of negative 1 end exponent x right parenthesis to the power of 2 end exponent plus left parenthesis blank c o s blank e c to the power of negative 1 end exponent x right parenthesis to the power of 2 end exponent$ is

maths-General

General

maths-

If $5 f left parenthesis x right parenthesis plus 3 f left parenthesis fraction numerator 1 over denominator x end fraction right parenthesis equals x plus 2$ andy $equals x f$ (x)then $fraction numerator d y over denominator d x end fraction$ at x=1 is

maths-General

General

maths-

Statement 1:Degree of differential equation $2 x minus 3 y plus 2 equals blank l o g blank left parenthesis fraction numerator d y over denominator d x end fraction 1$ is not defined
Statement 2: In the given D.E, the power of highest order derivative when expressed as a polynomials of derivatives is called degree

maths-General

General

maths-

The solution of $e to the power of x y end exponent left parenthesis x y to the power of 2 end exponent d y plus y to the power of 3 end exponent d x right parenthesis plus e to the power of x divided by y end exponent left parenthesis y d x minus x d y right parenthesis equals 0$ is

maths-General

General

maths-

Solution of the equation $fraction numerator d y over denominator d x end fraction equals fraction numerator y to the power of 2 end exponent minus y minus 2 over denominator x to the power of 2 end exponent plus 2 x minus 3 end fraction$ is $minus$ ( where c is arbitrary constant)

maths-General

Have a query? Ask a Tutor!!

Can’t find what you’re looking for?

Three normals are drawn to the parabola $y to the power of 2 end exponent equals 4 x$ from the point (c, 0) These normals are real and distinct when

c=0
c=1
c=2
c=3

The correct answer is: c=3

Related Questions to study

The points of contact of the vertical tangents to $x equals 2 minus 3 blank s i n blank theta comma$ $y equals 3 plus 2 blank c o s blank theta$ are

The points of contact of the vertical tangents to $x equals 2 minus 3 blank s i n blank theta comma$ $y equals 3 plus 2 blank c o s blank theta$ are

The curve $y equals a x to the power of 3 end exponent plus b x to the power of 2 end exponent plus c x plus 5$ touches the $x$ ‐axis at P(-2,0) and cuts the y ‐axis at a point $Q left parenthesis O comma 5 right parenthesis$ where its gradient is 3 Then a+2b+c=-

The curve $y equals a x to the power of 3 end exponent plus b x to the power of 2 end exponent plus c x plus 5$ touches the $x$ ‐axis at P(-2,0) and cuts the y ‐axis at a point $Q left parenthesis O comma 5 right parenthesis$ where its gradient is 3 Then a+2b+c=-

If $open vertical bar table row alpha beta row gamma cell negative alpha end cell end table close vertical bar$ is to be square root of a determinant of the two rowed unit matrix, then $alpha comma beta comma$ $gamma$ should satisfy the relation

If $open vertical bar table row alpha beta row gamma cell negative alpha end cell end table close vertical bar$ is to be square root of a determinant of the two rowed unit matrix, then $alpha comma beta comma$ $gamma$ should satisfy the relation

Matrix Ais given by $A equals open curly brackets table attributes columnalign left end attributes row 3 11 row 2 8 end table close curly brackets$ then the determinant of $A to the power of 2011 end exponent minus 5 A to the power of 2010 end exponent$ is

Matrix Ais given by $A equals open curly brackets table attributes columnalign left end attributes row 3 11 row 2 8 end table close curly brackets$ then the determinant of $A to the power of 2011 end exponent minus 5 A to the power of 2010 end exponent$ is

The minimum value of $left parenthesis s e c to the power of negative 1 end exponent x right parenthesis to the power of 2 end exponent plus left parenthesis blank c o s blank e c to the power of negative 1 end exponent x right parenthesis to the power of 2 end exponent$ is

The minimum value of $left parenthesis s e c to the power of negative 1 end exponent x right parenthesis to the power of 2 end exponent plus left parenthesis blank c o s blank e c to the power of negative 1 end exponent x right parenthesis to the power of 2 end exponent$ is

If $5 f left parenthesis x right parenthesis plus 3 f left parenthesis fraction numerator 1 over denominator x end fraction right parenthesis equals x plus 2$ andy $equals x f$ (x)then $fraction numerator d y over denominator d x end fraction$ at x=1 is

If $5 f left parenthesis x right parenthesis plus 3 f left parenthesis fraction numerator 1 over denominator x end fraction right parenthesis equals x plus 2$ andy $equals x f$ (x)then $fraction numerator d y over denominator d x end fraction$ at x=1 is

The solution of $e to the power of x y end exponent left parenthesis x y to the power of 2 end exponent d y plus y to the power of 3 end exponent d x right parenthesis plus e to the power of x divided by y end exponent left parenthesis y d x minus x d y right parenthesis equals 0$ is

The solution of $e to the power of x y end exponent left parenthesis x y to the power of 2 end exponent d y plus y to the power of 3 end exponent d x right parenthesis plus e to the power of x divided by y end exponent left parenthesis y d x minus x d y right parenthesis equals 0$ is

Solution of the equation $fraction numerator d y over denominator d x end fraction equals fraction numerator y to the power of 2 end exponent minus y minus 2 over denominator x to the power of 2 end exponent plus 2 x minus 3 end fraction$ is $minus$ ( where c is arbitrary constant)

Solution of the equation $fraction numerator d y over denominator d x end fraction equals fraction numerator y to the power of 2 end exponent minus y minus 2 over denominator x to the power of 2 end exponent plus 2 x minus 3 end fraction$ is $minus$ ( where c is arbitrary constant)

With Turito Academy.

With Turito Foundation.

Get an Expert Advice From Turito.

Turito Academy

With Turito Academy.

Test Prep

With Turito Foundation.

Courses

Quick Links

Follow Us at

Support

Download App

Courses

Quick Links

Have a query? Ask a Tutor!!

Can’t find what you’re looking for?

Three normals are drawn to the parabola from the point (c, 0) These normals are real and distinct when

c=0 c=1 c=2 c=3

The correct answer is: c=3

Related Questions to study

The points of contact of the vertical tangents to are

The points of contact of the vertical tangents to are

The curve touches the ‐axis at P(-2,0) and cuts the y ‐axis at a point where its gradient is 3 Then a+2b+c=-

The curve touches the ‐axis at P(-2,0) and cuts the y ‐axis at a point where its gradient is 3 Then a+2b+c=-

If is to be square root of a determinant of the two rowed unit matrix, then should satisfy the relation

If is to be square root of a determinant of the two rowed unit matrix, then should satisfy the relation

Matrix Ais given by then the determinant of is

Matrix Ais given by then the determinant of is

If then

If then

If then the number of positive divisors of the number p is

If then the number of positive divisors of the number p is

The number of positive integral solutions of the equation is

The number of positive integral solutions of the equation is

If be real matrices (not necessasrily square) such that forthematrix consider the statements

If be real matrices (not necessasrily square) such that forthematrix consider the statements

If , thenStatement becauseStatement :A.M for

If , thenStatement becauseStatement :A.M for

If , then the value of is equal to

If , then the value of is equal to

The minimum value of is

The minimum value of is

If andy (x)then at x=1 is

If andy (x)then at x=1 is

Statement 1:Degree of differential equation is not definedStatement 2: In the given D.E, the power of highest order derivative when expressed as a polynomials of derivatives is called degree

Statement 1:Degree of differential equation is not definedStatement 2: In the given D.E, the power of highest order derivative when expressed as a polynomials of derivatives is called degree

The solution of is

The solution of is

Solution of the equation is ( where c is arbitrary constant)

Solution of the equation is ( where c is arbitrary constant)

With Turito Academy.

With Turito Foundation.

Get an Expert Advice From Turito.

Turito Academy

With Turito Academy.

Test Prep

With Turito Foundation.

Courses

Quick Links

Three normals are drawn to the parabola $y to the power of 2 end exponent equals 4 x$ from the point (c, 0) These normals are real and distinct when

c=0
c=1
c=2
c=3

The points of contact of the vertical tangents to $x equals 2 minus 3 blank s i n blank theta comma$ $y equals 3 plus 2 blank c o s blank theta$ are

The points of contact of the vertical tangents to $x equals 2 minus 3 blank s i n blank theta comma$ $y equals 3 plus 2 blank c o s blank theta$ are

The curve $y equals a x to the power of 3 end exponent plus b x to the power of 2 end exponent plus c x plus 5$ touches the $x$ ‐axis at P(-2,0) and cuts the y ‐axis at a point $Q left parenthesis O comma 5 right parenthesis$ where its gradient is 3 Then a+2b+c=-

The curve $y equals a x to the power of 3 end exponent plus b x to the power of 2 end exponent plus c x plus 5$ touches the $x$ ‐axis at P(-2,0) and cuts the y ‐axis at a point $Q left parenthesis O comma 5 right parenthesis$ where its gradient is 3 Then a+2b+c=-

If $open vertical bar table row alpha beta row gamma cell negative alpha end cell end table close vertical bar$ is to be square root of a determinant of the two rowed unit matrix, then $alpha comma beta comma$ $gamma$ should satisfy the relation

If $open vertical bar table row alpha beta row gamma cell negative alpha end cell end table close vertical bar$ is to be square root of a determinant of the two rowed unit matrix, then $alpha comma beta comma$ $gamma$ should satisfy the relation

Matrix Ais given by $A equals open curly brackets table attributes columnalign left end attributes row 3 11 row 2 8 end table close curly brackets$ then the determinant of $A to the power of 2011 end exponent minus 5 A to the power of 2010 end exponent$ is

Matrix Ais given by $A equals open curly brackets table attributes columnalign left end attributes row 3 11 row 2 8 end table close curly brackets$ then the determinant of $A to the power of 2011 end exponent minus 5 A to the power of 2010 end exponent$ is

The minimum value of $left parenthesis s e c to the power of negative 1 end exponent x right parenthesis to the power of 2 end exponent plus left parenthesis blank c o s blank e c to the power of negative 1 end exponent x right parenthesis to the power of 2 end exponent$ is

The minimum value of $left parenthesis s e c to the power of negative 1 end exponent x right parenthesis to the power of 2 end exponent plus left parenthesis blank c o s blank e c to the power of negative 1 end exponent x right parenthesis to the power of 2 end exponent$ is

If $5 f left parenthesis x right parenthesis plus 3 f left parenthesis fraction numerator 1 over denominator x end fraction right parenthesis equals x plus 2$ andy $equals x f$ (x)then $fraction numerator d y over denominator d x end fraction$ at x=1 is

If $5 f left parenthesis x right parenthesis plus 3 f left parenthesis fraction numerator 1 over denominator x end fraction right parenthesis equals x plus 2$ andy $equals x f$ (x)then $fraction numerator d y over denominator d x end fraction$ at x=1 is

The solution of $e to the power of x y end exponent left parenthesis x y to the power of 2 end exponent d y plus y to the power of 3 end exponent d x right parenthesis plus e to the power of x divided by y end exponent left parenthesis y d x minus x d y right parenthesis equals 0$ is

The solution of $e to the power of x y end exponent left parenthesis x y to the power of 2 end exponent d y plus y to the power of 3 end exponent d x right parenthesis plus e to the power of x divided by y end exponent left parenthesis y d x minus x d y right parenthesis equals 0$ is

Solution of the equation $fraction numerator d y over denominator d x end fraction equals fraction numerator y to the power of 2 end exponent minus y minus 2 over denominator x to the power of 2 end exponent plus 2 x minus 3 end fraction$ is $minus$ ( where c is arbitrary constant)

Solution of the equation $fraction numerator d y over denominator d x end fraction equals fraction numerator y to the power of 2 end exponent minus y minus 2 over denominator x to the power of 2 end exponent plus 2 x minus 3 end fraction$ is $minus$ ( where c is arbitrary constant)