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If x=cos t and y=log t , prove that at t...

If x=cos t and y=log t , prove that at `t=pi/2`, `(d^2y)/(dx^2)+(dy/dx)^2=0`.

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CHHAYA PUBLICATION-SECOND ORDER DERIVATIVE-Long answer type Question
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  2. If y=e^x, Prove that , xy2-(2x-1)y1+(x-1)y=0.

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  4. If x=cos t and y=log t , prove that at t=pi/2, (d^2y)/(dx^2)+(dy/dx)^2...

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  7. Evaluate int sin3x sin5xdx.

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  9. Putting logx=z show that, x^2(d^2y)/(dx^2)=(d^2y)/(dz^2)-dy/dz.

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  10. If x=Ae^(-(kt)/2)cos(pt+in), and A,k,p,in are constants, show that (d^...

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  11. IF y^4+5xy+y=2, find dy/dxand(d^2y)/(dx^2), when x=0,y=1.

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  12. If F(x) =f(x)phi(x) and f'(x)phi'(x)=a (a constant), then prove that ,...

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  13. IF y=e^(ax)sin bx, then prove that, (d^2y)/(dx^2)-2ady/dx+(a^2+b^2)...

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  14. If y=cosecx+cotx, then show that,(d^2y)/(dx^2)=sinx/(1-cosx)^2.

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  15. IF y^2=ax^2+2bx+c, Prove that (d^2x)/(dy^2)=(b^2-ac)/(ax+b)^3.

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  16. IF y=Ae^(mx)+Be^(nx), show that y2-(m+n)y1+mny=0.

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  17. IF xsqrt(1+y)+ysqrt(1+x)=0, show that, dy/dx=-1/(1+x)^2

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  18. IF xsqrt(1+y)+ysqrt(1+x)=0, show that, (d^2y)/(dx^2)=2/(1+x)^3.

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  19. IF y=e^(msin^-1x), find the value of (y2)0.

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  20. IF y=sqrt(sin x+sqrt(sin x +sqrt(sin x +.... oo), show that (2y-1)^3...

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