Q. Find the derivative of the following function.y=e7x5Answer: y′=
Identify Function & Type: Identify the function and the type of differentiation required.We are given the function y=e7x5 and we need to find its derivative with respect to x. This is a case of finding the derivative of an exponential function with a composite function (7x5) as the exponent.
Apply Chain Rule: Apply the chain rule for differentiation.The chain rule states that the derivative of a composite function is the derivative of the outer function evaluated at the inner function times the derivative of the inner function. In this case, the outer function is eu (where u=7x5) and the inner function is 7x5.
Differentiate Outer Function: Differentiate the outer function with respect to the inner function.The derivative of eu with respect to u is eu. So, the derivative of e7x5 with respect to 7x5 is e7x5.
Differentiate Inner Function: Differentiate the inner function with respect to x. The inner function is 7x5. Using the power rule, the derivative of xn with respect to x is n⋅x(n−1), so the derivative of 7x5 with respect to x is 35x4.
Multiply Derivatives: Multiply the derivatives from Step 3 and Step 4.We multiply the derivative of the outer function by the derivative of the inner function to get the derivative of the composite function. Therefore, y′=e7x5×35x4.
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