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Mathematics
Problem
Let
f
(
x
)
=
2
x
+
3
x
−
1
f(x)=\dfrac{2x+3}{x-1}
f
(
x
)
=
x
−
1
2
x
+
3
,
x
≠
1
x\ne 1
x
=
1
. Evaluate
f
(
f
(
3
)
)
f\!\bigl(f(3)\bigr)
f
(
f
(
3
)
)
. a)
12
7
\dfrac{12}{7}
7
12
b)
24
5
\dfrac{24}{5}
5
24
c)
24
7
\dfrac{24}{7}
7
24
d)
3
3
3
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