Final answer:
The derivative of y = log x is 1/x.
Step-by-step explanation:
To find the derivative of y = log x, we can use the properties of logarithmic functions. Let's use the natural logarithm, denoted as ln. The derivative is given by:
y' = 1/x
This means that the rate at which the function y = log x is changing with respect to x is equal to 1 divided by x.