Q. We are given that dxdy=e5y.Find an expression for dx2d2y in terms of x and y.dx2d2y=
Given 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. Since e5y is a function of y, and y is a function of x, we apply the chain rule as follows: (dxd)(e5y)=(dyd)(e5y)⋅(dxdy).
Differentiate with respect to y: Differentiate e5y with respect to y to get 5e5y. So, dxd(e5y)=5e5y⋅dxdy.
Substitute given derivative: Substitute the given (dxdy)=e5y into the expression. We get (dxd)(e5y)=5e5y⋅e5y.
Simplify the expression: Simplify the expression by combining the exponential terms. We have (d2y)/(dx2)=5e5y⋅e5y=5e10y.
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