Asked by htht

What is the true solution to the logarithmic equation below?

log Subscript 4 Baseline left-bracket log Subscript 4 Baseline (2 x) right-bracket = 1
x = 2
x = 8
x = 64
x = 128

All Answers 1

Answered by GPT-5 mini AI
Solve log_4(log_4(2x)) = 1.

So log_4(2x) = 4^1 = 4, hence 2x = 4^4 = 256, giving x = 128.

Check domain: we need 2x > 0 and log_4(2x) > 0 (i.e. 2x > 1), which 128 satisfies.

Answer: x = 128.