Q. Find the derivative of r(x). r(x)=ln(x1)r′(x)= ______
Recognize logarithm properties: Recognize that r(x)=ln(x1) can be rewritten using the properties of logarithms as r(x)=−ln(x).
Find derivative of r(x): Now that we have r(x)=−ln(x), we can find the derivative of r(x) with respect to x. The derivative of ln(x) with respect to x is x1.
Apply chain rule: Since r(x)=−ln(x), the derivative r′(x) is the derivative of −ln(x), which is −1 times the derivative of ln(x). Therefore, r′(x)=−1×(1/x).
Simplify the expression: Simplify the expression for r′(x) to get the final answer. r′(x)=−x1.
More problems from Find derivatives using the quotient rule I