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If x^(2)+y^(2)=t+(1)/(t) and x^(4)+y^(4...

If `x^(2)+y^(2)=t+(1)/(t) and x^(4)+y^(4)=t^(2)+(1)/(t^(2))`, then the value of `-x^(3)y(dy)/(dx)` is -

A

1

B

`(1)/(2)`

C

`(1)/(3)`

D

`(1)/(4)`

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The correct Answer is:
A
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CHHAYA PUBLICATION-MCQ ZONE -Question Paper 8
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  8. Let f(x) be a function satisfying f'(x)=f(x) with f(0)=1 and g(x) be ...

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  12. If int(-(1)/(2))^((1)/(2)) cos x log((1+x)/(1-x))dx=k log2, then the ...

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  14. If int(sinx)^(1) t^(2) f(t) dt =1-sinx, then the value of f((1)/(sqr...

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  19. If I(1)=int sin^(-1)x dx and I(2)=int sin^(-1) sqrt(1-x^(2)) dx th...

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