Pre Calculus

Evaluate the function f(x) = log3 x at x =1/27 without using a calculator

a. –4
b. –2
c. 1/27
d. –3
e. 27

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  1. so you want:
    y = log3 (127)
    or
    3^y = 1/27 , by definition of logs
    3^y = 3^-3

    y = -3

    f(1/27) = -3

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