Question

If f(x) = log2 (x + 4), what is f−1(3)?
@myininaya

Answer 1

set
\[\log_2(x+4)=3\] and solve for \(x\)
first write in equivalent exponential form as
\[2^3=x+4\] then solve for \(x\) in one step

Answer 2

\[Log_2(x+4)=Log_2(2^3)\]

Answer 3

Identities used.\[1=Log_cc\]\[3=3 \times Log_cc\]\[3=Log_c(c^3)\]