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If y = e^(acos^-1x), -1lexle1, show that...

If `y = e^(acos^-1x), -1lexle1`, show that `(1-x^2)(d^2y)/dx^2 - x(dy/dx) - a^2y = 0`

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The correct Answer is:
`(1- x^2) ((d^2 y)/(dx^2)) - x (dy)/(dx) - a^2 y = 0`
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