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CBSE 11TH MATHEMATICS - Online Test
cbse 11th mathematics
TEST : 82
Relations and Functions
Prepare / Learn
Q1.
If f (x) =
(
25
−
x
4
)
1
/
4
for 0 < x <
5
–
√
, then
f
(
f
(
1
2
)
)
=
A.
2
−
4
B.
2
−
3
C.
2
−
1
D.
2
−
2
View Solution
Add Work Space
Answer :
Option C
Explaination / Solution:
No Explaination.
Relations and Functions
Prepare / Learn
Q2.
Two functions
f
:
R
→
R
and g :
R
→
R
are defined as follows :
then (gof)(e) + (fog)(
π
) =
A.
0
B.
1
C.
2
D.
-1
View Solution
Add Work Space
Answer :
Option D
Explaination / Solution:
No Explaination.
Relations and Functions
Prepare / Learn
Q3.
Let function f : R
→
R be defined by f (x )= 2x + sin x for x
∈
R. Then f is
A.
onto but NOT one-to-one
B.
neither one-to-one nor onto
C.
one-to-one and onto
D.
one-to-one but NOT onto
View Solution
Add Work Space
Answer :
Option C
Explaination / Solution:
No Explaination.
Relations and Functions
Prepare / Learn
Q4.
Coefficient of
x
3
in the expansion of tan x is
A.
1/2
B.
2/15
C.
1/3
D.
1/4
View Solution
Add Work Space
Answer :
Option C
Explaination / Solution:
No Explaination.
Relations and Functions
Prepare / Learn
Q5.
If f(x) =
2
x
+
1
3
x
−
2
,
then (fof) (2) is equal to
A.
3
B.
4
C.
2
D.
1
View Solution
Add Work Space
Answer :
Option C
Explaination / Solution:
No Explaination.
Relations and Functions
Prepare / Learn
Q6.
If
f
(
x
)
=
log
(
1
+
x
1
−
x
)
,
then f (x) is
A.
f
(
x
1
)
f
(
x
2
)
=
f
(
x
1
−
x
2
)
B.
f
(
x
1
)
f
(
x
2
)
=
f
(
x
1
+
x
2
)
C.
even
D.
odd
View Solution
Add Work Space
Answer :
Option D
Explaination / Solution:
No Explaination.
Relations and Functions
Prepare / Learn
Q7.
Let the function f be defined by f (x)
=
2
x
+
1
1
−
3
x
,
then
f
−
1
(x) is
A.
3
x
+
2
x
−
1
B.
x
+
1
3
x
−
2
C.
x
-
1
3
x
−
2
D.
2
x
+
1
1
−
3
x
View Solution
Add Work Space
Answer :
Option C
Explaination / Solution:
No Explaination.
Relations and Functions
Prepare / Learn
Q8.
In a city 20 percent of the population travels by car, 50 percent travels by bus and 10 percent travels by both car and bus. Then persons travelling by a car or bus is
A.
80 percent
B.
40 percent
C.
70 percent
D.
60 percent
View Solution
Add Work Space
Answer :
Option D
Explaination / Solution:
No Explaination.
Relations and Functions
Prepare / Learn
Q9.
The minimum value of sin x + cos x is
A.
0
B.
√2
C.
-2√2
D.
-√2
View Solution
Add Work Space
Answer :
Option D
Explaination / Solution:
No Explaination.
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Scored Mark :
Mark for Correct Answer : 1 Mark for Wrong Answer : -0.5 Mark for Left Answer : 0
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REDO LAST TEST AGAIN : ( TEST 81 )
REDO THIS TEST AGAIN : ( TEST 82 )
cbse 11th mathematics
TEST : 82
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