[Math] How to type logarithms in Wolfram|Alpha

logarithmswolfram alpha

Its sometimes hard to type it if logarithm is not natural and base is not 10, especially if base is variable. So anyone know rules how to type?

Best Answer

Two ways I just checked:

Typing log(a,b) gives $\log_a(b)$.

You can also use change-of-base to represent $\log_a(b)$ by log(b)/log(a).