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OpenStudy (anonymous):
If f(x) = log2 (x + 4), what is f^−1(3)?
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OpenStudy (anonymous):
what's 3 = log_2 (x+4)?
OpenStudy (anonymous):
i'm not following
OpenStudy (anonymous):
i don't even know how to explain
OpenStudy (anonymous):
how about this f^-1(a) = b means f(b) = a so if f^-(3) = b, then f(b) = 3 replace b with x, you get f(x) = 3
OpenStudy (anonymous):
and f(x) is already given. Just solve for x
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