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If y = e^(-ax) cos (bx + c), show that ...

If `y = e^(-ax) cos (bx + c)`, show that `(d^2y)/(dx^2) + 2a(dy)/(dx) + (a^2 + b^2) y = 0`

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PRADEEP PUBLICATION-CONTINUITY AND DIFFERENTIABILITY-EXERCISE
  1. If y = cosec^-1x,x>1, then show that : x(x^2-1)(d^2y)/(dx^2) + (2x^2-1...

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  2. If y = x^x, prove that y2 - y^-1 (y1)^2 - yx^-1 = 0

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  3. If y = e^(-ax) cos (bx + c), show that (d^2y)/(dx^2) + 2a(dy)/(dx) + ...

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  4. If y^2 = ax^2 + b, prove that (d^2y)/(dx^2) = ab/y^3

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  5. If x^2 + y^2 = a^2, prove that (d^2y)/(dx^2) = -a^2/y^3

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  6. If x^m y^n = (x+y)^(m+n), prove that dy/dx = y/x and (d^2y)/(dx^2) = 0

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  7. If x^2/a^2 + y^2/b^2 = 1, prove that (d^2y)/(dx^2) = -(b^4)/(a^2y^3)~

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  8. If sqrtx + sqrty = sqrtx , find (d^2y)/(dx^2) at x = a

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  9. Find (d^2y)/(dx^2) if x=at^2), y = 2 a t.

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  10. Find (d^2y)/(dx^2) if x= cos theta, y = a sin theta)

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  11. If x = a sin^3 theta, y = a cos^3 theta, find (d^2y)/(dx^2) at theta ...

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  12. If x=a (cos t + t sin t) and y = a (sin t - t cos t ), find (d^2x)/(dt...

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  13. Find (d^2y)/(dx^2) in the following If x = a (theta + sin theta) , y...

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  14. If x=(1-t^2)/(1+t^2), y=(2t)/(1+t^2), find (dy)/(dx) at x=2.

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  15. Verify Rolle's theorem for the following functions in the given interv...

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  16. Find the derivative of Following tan(log3x)

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  17. Find the derivative of Sin2x+Cosec5x

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  18. Find the derivative of cot2x-cos9x

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  19. Verify Rolle's theorem for the following functions in the given interv...

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  20. Verify the conditions of Rolle's Theorem in the followin problems. In ...

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