Q. We are given that dxdy=e5y.Find an expression for dx2d2y in terms of x and y.dx2d2y=□ I +
Given first derivative: We are given the first derivative of y with respect to x as dxdy=e5y. To find the second derivative dx2d2y, we need to differentiate dxdy with respect to x.
Apply chain rule: Using the chain rule, we differentiate e5y with respect to x. The chain rule states that the derivative of eu with respect to x is eu⋅dxdu, where u is a function of x. In this case, u=5y, so we need to multiply e5y by the derivative of 5y with respect to x, which is x1.
Substitute into expression: We already know that (dxdy)=e5y, so we substitute this into our expression for the derivative of 5y with respect to x. This gives us 5⋅e5y.
Find second derivative: Therefore, the second derivative dx2d2y is e5y⋅5⋅e5y, which simplifies to 5⋅e10y.
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