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Let $f(x)=2^{x} .$ We will see in the next section that this function is one-toone. Find each value, always working part (a) before part $(b)$.
(a) $f(4)$(b) $f^{-1}(16)$
a. 16b. x = 4
Algebra
Chapter 12
Inverse, Exponential, and Logarithmic Functions
Section 1
Inverse Functions
Functions
Exponential and Logarithmic Functions
McMaster University
University of Michigan - Ann Arbor
Idaho State University
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So here we have effort backed physical too to to the X two part is asking what is ever fourth. So that means we're gonna plug in for into our X. So we have before is equal to to to the fourth. Which is that ankle to 60. Okay, Barbie asked us what is the embers function of 16. So if we remember when we do our members, um, we are switching the why and the X, And so instead of plug in the 16 and two X, we're gonna plug it into ffx, right? It's gonna be out of why. And so we would have 16 is equal to do to the X and so to to what power gives of 16. And as we saw in part A, it's four. So then four would be X, and so those would be your answers
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