Evaluate the following basic logarithmic expressions without a calculator:

MATHEMATICS · Multi-part · A Level · Mathematics · Exponentials and logarithms · Exponentials and logarithms

Problem

Evaluate the following basic logarithmic expressions without a calculator: (1)

\log_3(81)

(2)

\log_5\left(\dfrac{1}{25}\right)

(3)

\log_4(2)