Suppose f(x) = 2^-x +1. Find a such that f(a) = 3.

Ccy asked Nov 14, 2023

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Ccy asked Nov 14, 2023

by Ccy

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12 votes

Answer:

a = -1

Explanation:

let
2^(-x)+1 be 3

solve for x:

$2^(-x)+1=3\\2^(-x)=2\\-x=log2(2)\\-x=1\\x=-1$

BarryWalsh answered Nov 18, 2023

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