Hi there!
Th' value of f(x) = 4
The graph shows th' function f(x) = 2ˣ
Then,
f(x) = 2ˣ
4 = 2ˣ
2² = 2ˣ
Since,
The base of th' are same both sides.
Equating Exponents :-
2ˣ = 2²
x = 2
Hence,
The required value of " x " = 2
~ Hope it helps!
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