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Akansha Karvekar
Subject: Maths
, asked on 2/4/18
Q8
8
∫
3
8
x
1
+
x
d
x
=
a
32
3
b
31
3
c
29
3
d
28
3
Answer
1
Akansha Karvekar
Subject: Maths
, asked on 2/4/18
Q 16
(
16
)
∫
0
π
/
2
s
e
c
x
3
s
e
c
x
3
+
cos
e
c
x
3
d
x
=
(
a
)
π
4
(
b
)
π
(
c
)
π
2
(
d
)
π
3
Answer
1
Karan Chaudhary
Subject: Maths
, asked on 30/3/18
Q. Find domain ?
11.
y
=
a
r
e
sin
x
4
Answer
1
Divya Mahesh
Subject: Maths
, asked on 28/3/18
Solve this:
Q. What does this sign mean ?
Answer
2
Rupal Sahu
Subject: Maths
, asked on 27/3/18
If
f
x
+
2
y
,
x
-
2
y
=
x
y
,
then
f
x
,
y
equals
(A)
x
2
-
y
2
8
(B)
x
2
-
y
2
4
(C)
x
2
+
y
2
4
(D)
x
2
-
y
2
2
Answer
1
Kevan Mehta
Subject: Maths
, asked on 25/3/18
Number of natural numbers up to one lakh which contains 1,2,3 exactly once and remaining digits any time is
Answer
1
Aditya Singh
Subject: Maths
, asked on 24/3/18
E
a
c
h
s
e
t
X
r
c
o
n
t
a
i
n
s
5
e
l
e
m
e
n
t
s
a
n
d
e
a
c
h
s
e
t
Y
r
c
o
n
t
a
i
n
s
2
e
l
e
m
e
n
t
s
a
n
d
U
r
=
1
20
X
r
=
S
=
U
r
=
1
20
Y
r
.
I
f
e
a
c
h
e
l
e
m
e
n
t
o
f
S
b
e
l
o
n
g
t
o
e
x
a
c
t
l
y
10
o
f
t
h
e
X
r
'
s
a
n
d
t
o
e
x
a
c
t
l
y
4
o
f
t
h
e
Y
r
'
s
,
T
h
e
n
n
i
s
(
a
)
10
(
b
)
20
(
c
)
100
(
d
)
50
Answer
1
Guna Shekar
Subject: Maths
, asked on 24/3/18
For two complex numbers z1 and z2, we have |z1-z2|/|1-(z1
(bar)
)z2|=1, then
A) Both z1 and z2 lie on circle |z|=1
B)arg(z1/z2)=pi/3
C)At least one of z1 and z2 lies on the circle |z|=1
D)|z1|=2|z2|
Answer
1
Guna Shekar
Subject: Maths
, asked on 24/3/18
If z is a complex number satisfying |2008z-1|=2008|z-2|, then locus of z is
Answer
1
Guna Shekar
Subject: Maths
, asked on 24/3/18
If log
√3
((|z|
2
-|z|+1)/(2+|z|))<2, then the locus of z is?
Answer
1
Guna Shekar
Subject: Maths
, asked on 23/3/18
What is the range of the expression 2
x
+ 2
-x
+ 3
x
+ 3
-x
for x belongs to R?
Answer
1
Shubhrajyoti Ghosh
Subject: Maths
, asked on 23/3/18
No links please
Q. Examine whether 0 defined on N by a 0 b = a – b,
∀
a
,
b
∈
N
,
O
is a binary operation on N.
Answer
2
Shubhrajyoti Ghosh
Subject: Maths
, asked on 23/3/18
No links please:
(ii) the operation * is defined by a *b=b
a
on the set z={0,1,2,3,........}. Prove that * is not binary operation on z.
(b) (ii)
A
→
=
1
17
4
3
-
3
2
Answer
1
Shubhrajyoti Ghosh
Subject: Maths
, asked on 23/3/18
Solve this :
No links please.
Q
.
A
function
f
:
I
→
defined
by
f
(
x
)
=
3
x
2
-
14
x
+
10
,
where
I
is
a
set
of
integers
.
Find
f
(
2
)
-
1
.
[
1
.
(
a
)
Ans
:
f
→
2
=
4
]
Answer
1
Shubhrajyoti Ghosh
Subject: Maths
, asked on 21/3/18
No links please
Q.(i) Let
f
:
R
→
R
be defined by
f
x
=
x
,
i
f
x
i
s
r
a
t
i
o
n
a
l
0
,
i
f
x
i
s
i
r
r
a
t
i
o
n
a
l
Then show that f is continuous at all values of x
≠
0.
Answer
1
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What are you looking for?
11.
Q. What does this sign mean ?
(A) (B) (C) (D)
A) Both z1 and z2 lie on circle |z|=1
B)arg(z1/z2)=pi/3
C)At least one of z1 and z2 lies on the circle |z|=1
D)|z1|=2|z2|
Q. Examine whether 0 defined on N by a 0 b = a – b, is a binary operation on N.
(ii) the operation * is defined by a *b=ba on the set z={0,1,2,3,........}. Prove that * is not binary operation on z.
(b) (ii)
Q.(i) Let be defined by
Then show that f is continuous at all values of x 0.