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Mathematics
Mathematics
Problem
Let
f
(
x
)
=
5
x
−
4
f(x)=\sqrt{5x-4}
f
(
x
)
=
5
x
−
4
with domain
{
x
∈
R
∣
5
x
−
4
≥
0
}
\{x\in\mathbb{R}\mid 5x-4\ge 0\}
{
x
∈
R
∣
5
x
−
4
≥
0
}
. Evaluate
f
(
f
(
5
)
)
f\bigl(f(5)\bigr)
f
(
f
(
5
)
)
.
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