中等MATH-EXPL-002
What is log_3 81?
A. 3
B. 9
C. 4✓ 答案
D. 27
解說
3^4 = 81, so log_3 81 = 4. The value 3 is too small because 3^3 = 27. The logarithm is the exponent, not the power itself.
3^4 = 81, so log_3 81 = 4. The value 3 is too small because 3^3 = 27. The logarithm is the exponent, not the power itself.