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Shuchi Mittal
Subject: Maths
, asked 3 weeks ago
The scalar product of the vector a⃗ = î + ĵ + k̂ with a unit vector along the sum of the vectors b⃗ = 2î + 4ĵ – 5k̂ and c⃗ = λî + 2ĵ + 5k̂ is equal to 1. Find the value of λ and hence find the unit vector along b⃗ + c⃗ . (All India 2019)
Answer
1
Devansh Goud
Subject: Maths
, asked on 3/4/22
What is known as trignometry?
Answer
1
Benjamin Owusu
Subject: Maths
, asked on 9/5/22
2. Let
I =
?
?
1 0 0
0 1 0
0 0 1
?
? , A =
?
?
1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
1
3
?
? , and B = I ? A (a) Calculate AA and BB.
(b) Determine the rank of A.
(c) Determine the rank of B.
(d) Are matrices A and B idempotent?
Answer
1
Benjamin Owusu
Subject: Maths
, asked on 9/5/22
For each of the following functions, sketch its graph and describe whether it is continuous
and/or differentiable at the point of transition of its two formulas:
(a)
f(x) = (
+x
2
, x ? 0
?x
2
, x (b)
f(x) = (
+x
2 + 1, x ? 0
?x
2 ? 1, x (c) Discuss the continuity and differentiability of the function
f(x) = x
5
3
Answer
1
Tamoghno Banerjee
Subject: Maths
, asked on 28/4/22
I don't understand this sum
Answer
1
Marlon Foster
Subject: Maths
, asked on 12/4/22
This is a statistic question
Answer
1
Bivete
Subject: Maths
, asked on 23/3/22
The question is indicated below: no 30
Answer
1
Bivete
Subject: Maths
, asked on 23/3/22
The question is indicated below: no 29
Answer
1
Bivete
Subject: Maths
, asked on 23/3/22
The question is indicated below: no 28
Answer
1
Bivete
Subject: Maths
, asked on 23/3/22
The question is indicated below: no 27
Answer
1
Bivete
Subject: Maths
, asked on 23/3/22
The question is indicated below: no 26
Answer
1
Bivete
Subject: Maths
, asked on 23/3/22
The question is indicated below: no 25
Answer
1
Bivete
Subject: Maths
, asked on 23/3/22
The question is indicated below: 24
Answer
1
Bivete
Subject: Maths
, asked on 23/3/22
The question is indicated below: no 21
Answer
1
Bivete
Subject: Maths
, asked on 23/3/22
The question is indicated below: no 20
Answer
1
1
2
3
4
5
Next
What are you looking for?

I =

?

?

1 0 0

0 1 0

0 0 1

?

? , A =

?

?

1

3

1

3

1

3

1

3

1

3

1

3

1

3

1

3

1

3

?

? , and B = I ? A (a) Calculate AA and BB.

(b) Determine the rank of A.

(c) Determine the rank of B.

(d) Are matrices A and B idempotent?

and/or differentiable at the point of transition of its two formulas:

(a)

f(x) = (

+x

2

, x ? 0

?x

2

, x (b)

f(x) = (

+x

2 + 1, x ? 0

?x

2 ? 1, x (c) Discuss the continuity and differentiability of the function

f(x) = x

5

3