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Mathematics

Functions

Easy

Question

$text If end text f left parenthesis x right parenthesis equals fraction numerator cos x sin x over denominator tan x plus cot x end fraction text end text$ then function f(x) is

Even
Odd
Both even and odd
Neither odd nor even

The correct answer is: Even

$f left parenthesis negative x right parenthesis equals fraction numerator cos left parenthesis negative x right parenthesis sin left parenthesis negative x right parenthesis over denominator tan left parenthesis negative x right parenthesis plus cot left parenthesis negative x right parenthesis end fraction equals fraction numerator cos x sin x over denominator tan x plus cot x end fraction equals f left parenthesis x right parenthesis not stretchy rightwards double arrow f left parenthesis x right parenthesis text is even end text$

Related Questions to study

The function $text end text f left parenthesis x right parenthesis equals log open parentheses x plus square root of x squared plus 1 end root close parentheses text is end text$

The function $text end text f left parenthesis x right parenthesis equals log open parentheses x plus square root of x squared plus 1 end root close parentheses text is end text$

MathematicsFunctions

$text Let end text g colon R not stretchy rightwards arrow open parentheses 0 comma pi over 3 close square brackets text be defined by end text g left parenthesis x right parenthesis equals cos to the power of negative 1 end exponent open parentheses fraction numerator x squared minus k over denominator 1 plus x squared end fraction close parentheses space$ Then find the possible values of k for which g is surjective function

$text Let end text g colon R not stretchy rightwards arrow open parentheses 0 comma pi over 3 close square brackets text be defined by end text g left parenthesis x right parenthesis equals cos to the power of negative 1 end exponent open parentheses fraction numerator x squared minus k over denominator 1 plus x squared end fraction close parentheses space$ Then find the possible values of k for which g is surjective function

MathematicsFunctions

$text If end text f colon N not stretchy rightwards arrow Z space f left parenthesis n right parenthesis equals open curly brackets table attributes columnalign left columnspacing 1em end attributes row cell fraction numerator n minus 1 over denominator 2 end fraction comma text when end text n text is odd end text end cell row cell negative n over 2 comma text when end text n text is even end text end cell end table close$ Identify the type of function

$text If end text f colon N not stretchy rightwards arrow Z space f left parenthesis n right parenthesis equals open curly brackets table attributes columnalign left columnspacing 1em end attributes row cell fraction numerator n minus 1 over denominator 2 end fraction comma text when end text n text is odd end text end cell row cell negative n over 2 comma text when end text n text is even end text end cell end table close$ Identify the type of function

MathematicsFunctions

parallel

Which of the following functions from Z to it self are bijections?

Which of the following functions from Z to it self are bijections?

MathematicsFunctions

Let f(x) be a function and k be a positive real number such that
$f left parenthesis x plus k right parenthesis plus f left parenthesis x right parenthesis equals 0 space f o r space a l l space x element of R. space t h e n space f i n d space t h e space p e r i o d space o f space f left parenthesis x right parenthesis space$

Let f(x) be a function and k be a positive real number such that
$f left parenthesis x plus k right parenthesis plus f left parenthesis x right parenthesis equals 0 space f o r space a l l space x element of R. space t h e n space f i n d space t h e space p e r i o d space o f space f left parenthesis x right parenthesis space$

MathematicsFunctions

If f(x) is polynomial function satisfying $text end text f left parenthesis x right parenthesis times f open parentheses 1 over x close parentheses equals f left parenthesis x right parenthesis plus f open parentheses 1 over x close parentheses text and end text text end text f left parenthesis 4 right parenthesis equals 65 comma text then find end text f left parenthesis 6 right parenthesis$

If f(x) is polynomial function satisfying $text end text f left parenthesis x right parenthesis times f open parentheses 1 over x close parentheses equals f left parenthesis x right parenthesis plus f open parentheses 1 over x close parentheses text and end text text end text f left parenthesis 4 right parenthesis equals 65 comma text then find end text f left parenthesis 6 right parenthesis$

MathematicsFunctions

parallel

Let f be a function satisfying f(xy) = $fraction numerator f left parenthesis x right parenthesis over denominator y end fraction$ for all positive real numbers x and y if f(30) =20, then find the value of f(40)

Let f be a function satisfying f(xy) = $fraction numerator f left parenthesis x right parenthesis over denominator y end fraction$ for all positive real numbers x and y if f(30) =20, then find the value of f(40)

MathematicsFunctions

$text Let a function end text f left parenthesis x right parenthesis text satisfies end text f left parenthesis x right parenthesis plus f left parenthesis 2 x right parenthesis plus f left parenthesis 2 minus x right parenthesis plus f left parenthesis 1 plus x right parenthesis equals x straight for all x element of R.$ Then find the value of f(0)

$text Let a function end text f left parenthesis x right parenthesis text satisfies end text f left parenthesis x right parenthesis plus f left parenthesis 2 x right parenthesis plus f left parenthesis 2 minus x right parenthesis plus f left parenthesis 1 plus x right parenthesis equals x straight for all x element of R.$ Then find the value of f(0)

MathematicsFunctions

The function f(x) is defined for all real x. If f(a+b) =f(ab) $for all a text and end text b$ $text and end text f open parentheses negative 1 half close parentheses equals negative 1 half$ then find the value of f(1005)

The function f(x) is defined for all real x. If f(a+b) =f(ab) $for all a text and end text b$ $text and end text f open parentheses negative 1 half close parentheses equals negative 1 half$ then find the value of f(1005)

MathematicsFunctions

parallel

$text Let end text f left parenthesis x right parenthesis equals x plus f left parenthesis x minus 1 right parenthesis text for end text straight for all x element of R. text If end text f left parenthesis 0 right parenthesis equals 1 comma text find end text f left parenthesis 100 right parenthesis$

$text Let end text f left parenthesis x right parenthesis equals x plus f left parenthesis x minus 1 right parenthesis text for end text straight for all x element of R. text If end text f left parenthesis 0 right parenthesis equals 1 comma text find end text f left parenthesis 100 right parenthesis$

MathematicsFunctions

$text If end text f subscript n left parenthesis x right parenthesis equals open parentheses tan x over 2 close parentheses left parenthesis 1 plus sec x right parenthesis left parenthesis 1 plus sec 2 x right parenthesis midline horizontal ellipsis open parentheses 1 plus sec 2 to the power of n x close parentheses text end text$
Then which of the following is not true?

$text If end text f subscript n left parenthesis x right parenthesis equals open parentheses tan x over 2 close parentheses left parenthesis 1 plus sec x right parenthesis left parenthesis 1 plus sec 2 x right parenthesis midline horizontal ellipsis open parentheses 1 plus sec 2 to the power of n x close parentheses text end text$
Then which of the following is not true?

MathematicsFunctions

$text Let end text sum from k equals 1 to 10 of f left parenthesis a plus k right parenthesis equals 16 open parentheses 2 to the power of 10 minus 1 close parentheses text where the function end text straight f text satisfies end text f left parenthesis x plus y right parenthesis equals f left parenthesis x right parenthesis f left parenthesis y right parenthesis text end text$
For all natural numbers x,y and f(1) =2. Then the natural number 'a' is

$text Let end text sum from k equals 1 to 10 of f left parenthesis a plus k right parenthesis equals 16 open parentheses 2 to the power of 10 minus 1 close parentheses text where the function end text straight f text satisfies end text f left parenthesis x plus y right parenthesis equals f left parenthesis x right parenthesis f left parenthesis y right parenthesis text end text$
For all natural numbers x,y and f(1) =2. Then the natural number 'a' is

MathematicsFunctions

parallel

$text If end text straight f left parenthesis straight x right parenthesis text is a function such that end text f left parenthesis x y right parenthesis equals f left parenthesis x right parenthesis plus f left parenthesis y right parenthesis text and end text f left parenthesis 2 right parenthesis equals 1 text then end text straight f left parenthesis straight x right parenthesis equals$

$text If end text straight f left parenthesis straight x right parenthesis text is a function such that end text f left parenthesis x y right parenthesis equals f left parenthesis x right parenthesis plus f left parenthesis y right parenthesis text and end text f left parenthesis 2 right parenthesis equals 1 text then end text straight f left parenthesis straight x right parenthesis equals$

MathematicsFunctions

$text If end text straight f left parenthesis straight x right parenthesis text is a function such that end text f left parenthesis x plus y right parenthesis equals f left parenthesis x right parenthesis f left parenthesis y right parenthesis text and end text f left parenthesis 3 right parenthesis equals 125 text then end text straight f left parenthesis straight x right parenthesis equals$

$text If end text straight f left parenthesis straight x right parenthesis text is a function such that end text f left parenthesis x plus y right parenthesis equals f left parenthesis x right parenthesis f left parenthesis y right parenthesis text and end text f left parenthesis 3 right parenthesis equals 125 text then end text straight f left parenthesis straight x right parenthesis equals$

MathematicsFunctions

If f(x) is a polynomial function such that $f left parenthesis x right parenthesis f open parentheses 1 over x close parentheses equals f left parenthesis x right parenthesis plus f open parentheses 1 over x close parentheses text and end text f left parenthesis 3 right parenthesis equals negative 80$ then f(x)

If f(x) is a polynomial function such that $f left parenthesis x right parenthesis f open parentheses 1 over x close parentheses equals f left parenthesis x right parenthesis plus f open parentheses 1 over x close parentheses text and end text f left parenthesis 3 right parenthesis equals negative 80$ then f(x)

MathematicsFunctions

parallel

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