Q. Find the derivative of the following function.y=log9(−6x6−6x5)Answer: y′=
Apply Chain Rule: First, we need to apply the chain rule to differentiate the logarithmic function with base 9. 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.The derivative of log9(u) with respect to u is 1/(u⋅ln(9)), where u is the inner function.In this case, u=−6x6−6x5.
Find Derivative of Inner Function: Next, we need to find the derivative of the inner function u with respect to x, which is −6x6−6x5. Using the power rule, the derivative of −6x6 is −36x5, and the derivative of −6x5 is −30x4. So, the derivative of u with respect to x is dxdu=−36x5−30x4.
Combine Results: Now, we can combine the results from the first two steps to find the derivative of y with respect to x. Using the chain rule, we get: y′=(u⋅ln(9))1⋅dxdu Substituting u=−6x6−6x5 and dxdu=−36x5−30x4, we have: y′=((−6x6−6x5)⋅ln(9))1⋅(−36x5−30x4)
Simplify Expression: Finally, we simplify the expression for y′ by distributing the derivative of the inner function across the numerator.y′=(−6x6−6x5)⋅ln(9)−36x5−30x4This is the derivative of the function y with respect to x.
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