Q. Find the derivative of the following function.y=e−7x6Answer: y′=
Identify Functions: We are given the function y=e−7x6. To find the derivative, we will use the chain rule, which 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.
Differentiate Outer Function: First, let's identify the outer function and the inner function. The outer function is eu where u is the inner function, and the inner function is −7x6.
Differentiate Inner Function: Now, we differentiate the outer function with respect to the inner function u. The derivative of eu with respect to u is eu.
Apply Chain Rule: Next, we differentiate the inner function −7x6 with respect to x. Using the power rule, the derivative of −7x6 is −42x6−1 or −42x5.
Simplify Final Answer: Now we apply the chain rule by multiplying the derivative of the outer function by the derivative of the inner function. This gives us the derivative of y with respect to x.y′=e(−7x6)×(−42x5)
Simplify Final Answer: Now we apply the chain rule by multiplying the derivative of the outer function by the derivative of the inner function. This gives us the derivative of y with respect to x.y′=e(−7x6)×(−42x5)Simplify the expression to get the final answer.y′=−42x5e(−7x6)
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