Q. For the following equation, find f′(x).f(x)=−4x4−8Answer: f′(x)=
Apply Power Rule: To find the derivative of the function f(x)=−4x4−8, we will use the power rule for differentiation. The power rule states that if f(x)=xn, then f′(x)=n⋅xn−1.
Differentiate −4x4: Applying the power rule to the term −4x4, we differentiate it as follows:f′(x) for −4x4=−4×4×x4−1=−16x3.
Derivative of Constant: The derivative of a constant is zero. Therefore, the derivative of −8 is 0.
Combine Derivatives: Combining the derivatives of both terms, we get the derivative of the entire function:f′(x)=−16x3+0.
Simplify Final Result: Simplifying the expression, we get the final derivative of the function: f′(x)=−16x3.
More problems from Evaluate expression when a complex numbers and a variable term is given