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Byju's Answer
Standard XII
Mathematics
Rational Function
Show that fx=...
Question
Show that f(x) = e
2x
is increasing on R.
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Solution
f
x
=
e
2
x
f
'
x
=
2
e
2
x
Now
,
x
∈
R
Since
t
he value of
e
2
x
is always positive for any real value of
x,
e
2
x
>
0
.
⇒
2
e
2
x
>
0
⇒
f
'
x
>
0
So,
f
(
x
)
is increasing on
R
.
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0
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