What is f(9) if f(x)=log3 x?

Question

asked Aug 19, 2023 169k views

1 Answer

Adam Patterson · Answer 1 · 2023-08-23T05:36:09+0000

Answer:

f(9) = 2

Step-by-step explanation:

To know what if f(9), we need to replace x by 9 on the equation of f(x), so:

$\begin{gathered} f(x)=\log _3x \\ f(9)=\log _39 \end{gathered}$

Then, the logarithm needs the number at which 3 to the power of this number is equal to 9.

Therefore:

$f(9)=\log _39=2$

Because:

So, the answer is:

f(9) = 2