Q. Find the derivative of the following function.y=e−6x2−9xAnswer: y′=
Identify function: Identify the function to differentiate.y=e(−6x2−9x)
Recognize composition: Recognize that this is a composition of functions: the exponential function and the inner function −6x2−9x.
Apply chain rule: Apply 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.
Calculate outer function derivative: Calculate the derivative of the outer function, eu, where u=−6x2−9x. The derivative of eu with respect to u is eu.(dudy)=eu
Calculate inner function derivative: Calculate the derivative of the inner function, u=−6x2−9x, with respect to x.(dxdu)=dxd(−6x2−9x)=−12x−9
Combine derivatives: Combine the derivatives using the chain rule.(dxdy)=(dudy)⋅(dxdu)(dxdy)=e(−6x2−9x)⋅(−12x−9)
Simplify final derivative: Simplify the expression to get the final derivative.y′=−e(−6x2−9x)⋅(12x+9)
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