Question

Evaluate. Round your answer to the nearest thousandth.
log4 ^21

Answer 1

`\log_4 21 = (1)/(2)\cdot \log_2 21 = (1)/(2)\cdot \left(\log_23+\log_2 7\right) \approx (1)/(2)\cdot\left(1.584+2.807\right) \approx 2.196`