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Let f(x) = 2x + 5. Simplify: f^-1(f(4)) 1/13 -13 13 31 4
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4 votes
Let f(x) = 2x + 5. Simplify: f^-1(f(4))

1/13
-13
13
31
4

User Malinda
by
7.8k points

1 Answer

4 votes
f(x) = 2x + 5

x = 4

f(4) = 2(4) + 5
f(4) = 8 + 5
f(4) = 13

f^-1(f(4)) = 1 / 2(4) + 5 = 1 / 8 + 5 = 1/13
User Julien Feniou
by
8.9k points
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