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Mathematics
Mathematics
Problem
Let
f
(
x
)
=
ln
x
f(x)=\ln x
f
(
x
)
=
ln
x
and
g
(
x
)
=
x
−
2
g(x)=x-2
g
(
x
)
=
x
−
2
for
1
≤
x
≤
4
1\le x\le 4
1
≤
x
≤
4
. Explain why the equation
f
(
x
)
=
g
(
x
)
f(x)=g(x)
f
(
x
)
=
g
(
x
)
must have at least one real solution in the interval
[
1
,
4
]
[1,4]
[
1
,
4
]
.
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