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E M B I B E
Mathematics Crash Course NDA & NA EE
>
Chapter 19 - Functions
>
Exercise 1
>
Q 49
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MEDIUM
NDA & NA EE
IMPORTANT
Earn 100
The inverse of the function
y
=
5
ln
x
is
(a)
x
=
y
1
ln
5
,
y
>
0
(b)
x
=
y
ln
5
,
y
>
0
(c)
x
=
y
1
ln
5
,
y
<
0
(d)
x
=
5
ln
y
,
y
>
0
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Important Questions on Functions
MEDIUM
NDA & NA EE
IMPORTANT
Mathematics Crash Course NDA & NA EE
>
Chapter 19 - Functions
>
Exercise 1
>
Q 50
Let
f
:
R
-
{
3
}
→
R
-
{
1
}
be defined by
f
x
=
x
-
2
x
-
3
. Let
g
:
R
→
R
be given as
g
(
x
)
=
2
x
-
3
. Then, the sum of all the values of
x
for which
f
-
1
x
+
g
-
1
x
=
13
2
is equal to
