The value of x is option (D) 2
What is a function?
In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y.
Given,
f(x) = [tex]2^{x}[/tex]
we have to find the value of x when f(x) =4
f(x) = [tex]2^{x}[/tex] =4
[tex]2^{x}=4\\ 2^{x}=2^{2}[/tex]
Therefore value of x is 2
Hence, the value of x is option (D) 2
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