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If $P identical to left parenthesis x comma y right parenthesis$ , $F subscript 1 end subscript identical to left parenthesis 3 comma 0 right parenthesis$ , $F subscript 2 end subscript identical to left parenthesis negative 3 comma 0 right parenthesis$ and $16 x to the power of 2 end exponent plus 25 y to the power of 2 end exponent equals 400$ , then $P F subscript 1 end subscript plus P F subscript 2 end subscript$ equals

8
6
10
12

The correct answer is: 10

Equation of the curve is $fraction numerator x to the power of 2 end exponent over denominator 5 to the power of 2 end exponent end fraction plus fraction numerator y to the power of 2 end exponent over denominator 4 to the power of 2 end exponent end fraction equals 1$
Þ $negative 5 less or equal than x less or equal than 5 comma negative 4 less or equal than y less or equal than 4$
$P F subscript 1 end subscript plus P F subscript 2 end subscript equals square root of left square bracket left parenthesis x minus 3 right parenthesis to the power of 2 end exponent plus y to the power of 2 end exponent right square bracket end root plus square root of left square bracket left parenthesis x plus 3 right parenthesis to the power of 2 end exponent plus y to the power of 2 end exponent right square bracket end root$
$equals square root of left parenthesis x minus 3 right parenthesis to the power of 2 end exponent plus fraction numerator 400 minus 16 x to the power of 2 end exponent over denominator 25 end fraction end root plus square root of left parenthesis x plus 3 right parenthesis to the power of 2 end exponent plus fraction numerator 400 minus 16 x to the power of 2 end exponent over denominator 25 end fraction end root$
$equals fraction numerator 1 over denominator 5 end fraction open curly brackets square root of left parenthesis 9 x to the power of 2 end exponent plus 625 minus 150 x right parenthesis end root plus square root of left parenthesis 9 x to the power of 2 end exponent plus 625 plus 150 x right parenthesis end root close curly brackets$
$equals fraction numerator 1 over denominator 5 end fraction open curly brackets square root of left parenthesis 3 x minus 25 right parenthesis to the power of 2 end exponent end root plus square root of left parenthesis 3 x plus 25 right parenthesis to the power of 2 end exponent end root close curly brackets equals fraction numerator 1 over denominator 5 end fraction open curly brackets 25 minus 3 x plus 3 x plus 25 close curly brackets$
$equals 10$ , $left parenthesis because 25 minus 3 x greater than 025 plus 3 x greater than 0$ )

Arrange the following in decreasing order of their solubility in water

chemistry-General

General

chemistry-

Which have maximum solubility in water, for nearly same molecular weight compounds

chemistry-General

General

chemistry-

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If , , and , then equals

8 6 10 12

The correct answer is: 10

Equation of the curve is Þ, )

Related Questions to study

Arrange the following in decreasing order of their solubility in water

Arrange the following in decreasing order of their solubility in water

Which have maximum solubility in water, for nearly same molecular weight compounds

Which have maximum solubility in water, for nearly same molecular weight compounds

The correct order of solubility in water is :a) CH3OHb) CH3CH2OHc) d)

The correct order of solubility in water is :a) CH3OHb) CH3CH2OHc) d)

Decreasing order of melting point of compound I - IV follows :

Decreasing order of melting point of compound I - IV follows :

Decreasing order of melting point of compound I to IV follows

Decreasing order of melting point of compound I to IV follows

Which order is correct regarding melting point ?

Which order is correct regarding melting point ?

Decreasing order of boiling point of I to IV follow

Decreasing order of boiling point of I to IV follow

The correct boiling point order is :

The correct boiling point order is :

Arrange the following in decreasing order of their boiling points

Arrange the following in decreasing order of their boiling points

Decreasing order of boiling point of I - IV follows

Decreasing order of boiling point of I - IV follows

Correct boiling point order for I to IV is

Correct boiling point order for I to IV is

The correct order of dipole moment is :

The correct order of dipole moment is :

The increasing order of dipole moment of following compounds is :

The increasing order of dipole moment of following compounds is :

Which will have highest dipole moment ?

Which will have highest dipole moment ?

Arrange the following in decreasing order of dipole moments

Arrange the following in decreasing order of dipole moments

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8
6
10
12

The correct order of solubility in water is :
a) CH₃OH
b) CH₃CH₂OH
c)
d)

The correct order of solubility in water is :
a) CH₃OH
b) CH₃CH₂OH
c)
d)