Q. For the following equation, evaluate f′(3).f(x)=−5x+1Answer:
Find Derivative: To find f′(3), we first need to determine the derivative of the function f(x)=−5x+1. The derivative of a function gives us the rate at which the function's value changes at any given point.
Derivative of Linear Function: The function f(x)=−5x+1 is a linear function, and the derivative of a linear function is simply the coefficient of x. Therefore, the derivative f′(x) is −5.
Calculate f′(3): Since the derivative f′(x) is constant and equal to −5 for all x, the value of f′(3) is also −5. There is no need to substitute x=3 into the derivative because it does not depend on x.