Diketahui F(x) = dan f(b) = berapakah nilai b ?.... Question from @salsa2601

September 2018 2 16 Report

Diketahui F(x) = $3^{x}$ dan f(b) = $\frac{1}{243}$ berapakah nilai b ?

illa16 F(x) = $3^{x}$
f(b) = $3^{b}$
$\frac{1}{243}$ = $3^{b}$
$\frac{1}{ 3^{5} }$ = $3^{b}$
$3^{-5}$ = $3^{b}$
-5 = b

1 votes Thanks 0

Ganjar64 F(x) = 3^x
f(b) = 1/243
3^b = 1/3^5
3^b = 3^(-5)
b = -5

0 votes Thanks 0

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