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Monish Preetam
Subject: Maths
, asked on 12/3/18
Find the multiplicative inverse of:
1. 2+i√3
2. 1-2i
3. (1+i√3)²
4. (3+4i)/(4-5i)
Answer
1
Vivek Bisht
Subject: Maths
, asked on 4/3/18
Is 4pi/3 equal to -2pi/3 angle in the co-ordinate graph( Question asked with reference to answer given for maths ncert exercise 5.2 question 1)
Answer
1
Yagyam Aggarwal
Subject: Maths
, asked on 28/2/18
67. The least integral value of λ for which
x
2
– 4
x
+ λ > 0, ∀
x
∈R is
(1) 4 (2) 5 (3) 6 (4) 7
68. If
b > a
then the equation (
x – a
) (
x – b
) – 1 = 0 has
(1) Both roots in [
a, b
]
(2) Both roots in (–∞,
a
)
(3) Both roots in (
b
, ∞)
(4) One roots in (–∞,
a
) and other in (
b
, ∞)
Answer
1
Kanishk Sharma
Subject: Maths
, asked on 27/2/18
ques20 and 22
Q20. If a + ib =
x
+
i
2
2
x
2
+
1
, prove that a
2
+ b
2
=
x
2
+
1
2
2
x
2
+
1
2
.
Q22. If
α
and
β
are different complex numbers with |
β
| = 1 , then find
β
-
α
1
-
αβ
.
Answer
1
Yagyam Aggarwal
Subject: Maths
, asked on 26/2/18
Please answer the 63rd Q.
63
.
If
z
=
4
+
3
i
,
then
z
4
-
16
z
3
+
114
z
2
-
400
z
+
630
is
(1) 0 (2) 5
(3)
-
5
(4) 625
Answer
1
Yagyam Aggarwal
Subject: Maths
, asked on 25/2/18
If z=4+3i,then z
4
-16z
3
+144z
2
-400z+630 is?
Answer
1
Dev
Subject: Maths
, asked on 25/2/18
Q.2. Locate the points for which 3 < |z| < 4.
Answer
3
Noel George Cherian
Subject: Maths
, asked on 21/2/18
Reduce [ 1/ 1−2i + 3 /1+i ][ 3+4i/ 2−4i] to standard form
Answer
1
Noel George Cherian
Subject: Maths
, asked on 21/2/18
If a + ib = (1 – i)(2 – 3i)(3 – i), find the value of a 2 + b 2 .
Answer
1
Raj Aryan
Subject: Maths
, asked on 13/2/18
Please answer fast!
7
.
I
f
z
i
s
c
o
m
p
l
e
x
n
u
m
b
e
r
s
a
t
i
s
f
y
i
n
g
t
h
e
r
e
l
a
t
i
o
n
z
+
1
=
z
+
2
(
1
+
i
)
,
t
h
e
n
z
i
s
(
A
)
1
2
1
+
4
i
(
B
)
1
2
3
+
4
i
(
C
)
1
2
1
-
4
i
(
D
)
n
o
n
e
o
f
t
h
e
s
e
Answer
2
Jatin Pruthi
Subject: Maths
, asked on 12/2/18
ANSWER THE FOLLOWING QUESTION:-
Q). If
z
1
a
n
d
z
2
are 1 - i and - 2 + 4i respectively, find
l
m
z
1
.
z
2
z
1
.
Answer
3
Nura Mohammad
Subject: Maths
, asked on 8/2/18
Can we prove by taking modulus on both the sides?
11
.
I
f
a
+
i
b
=
x
+
i
2
2
x
2
+
1
,
p
r
o
v
e
t
h
a
t
a
2
+
b
2
=
x
2
+
1
2
2
x
2
+
1
2
.
Answer
1
Nura Mohammad
Subject: Maths
, asked on 8/2/18
9 th
Answer
1
Nura Mohammad
Subject: Maths
, asked on 8/2/18
Can we take modulus on both the sides and solve?
Answer
1
Naga Nandhini
Subject: Maths
, asked on 6/2/18
Find the square root of -5+12i
Answer
1
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What are you looking for?
1. 2+i√3
2. 1-2i
3. (1+i√3)²
4. (3+4i)/(4-5i)
(1) 4 (2) 5 (3) 6 (4) 7
68. If b > a then the equation (x – a) (x – b) – 1 = 0 has
(1) Both roots in [a, b]
(2) Both roots in (–∞, a)
(3) Both roots in (b, ∞)
(4) One roots in (–∞, a) and other in (b, ∞)
Q20. If a + ib = , prove that a2 + b2 = .
Q22. If are different complex numbers with || = 1 , then find .
(1) 0 (2) 5
(3) (4) 625
Q). If are 1 - i and - 2 + 4i respectively, find .