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State True or False :For any set A, A is a subset of A *

Posted by Anu J 4 years, 5 months ago

CBSE > Class 11 > Mathematics

5 answers

Jainish Jain 4 years, 5 months ago

True

⠀ 4 years, 5 months ago

True ,its improper sub@et

Dhruv Singh 4 years, 5 months ago

True

Mandeep Kaur 4 years, 5 months ago

True

Prabhat Kumar 4 years, 5 months ago

True

ANSWER

If A = { 1, 3, 5}, how many elements has P(A)? *

Posted by Anu J 4 years, 5 months ago

CBSE > Class 11 > Mathematics

5 answers

Priyanshu Bisht 4 years, 5 months ago

8

Mahak Sitpal 4 years, 5 months ago

7

Mandeep Kaur 4 years, 5 months ago

3

Mayank Kumar 4 years, 5 months ago

3

? ? 4 years, 5 months ago

8

ANSWER

Find the degree and radian measure of exterior and interior angles hexagon

Posted by Kulsum Ansari 4 years, 5 months ago

CBSE > Class 11 > Mathematics

2 answers

Vivek Kumar 4 years, 5 months ago

For regular hexagon & for one angle

Vivek Kumar 4 years, 5 months ago

Interior = 120° = 2π/3 , exterior = 60° = π/3

ANSWER

Write of the following sets by roaster method The set of all natural number 'x' such that 4x + 9 < 50.

Posted by Sachin Bhardwaj 4 years, 5 months ago

CBSE > Class 11 > Mathematics

1 answers

Yogita Ingle 4 years, 5 months ago

Given that,

S = {x : x € N , 4x + 9 < 50 }

We have to express the above set in Roster Form

Given condition,

4x + 9 < 50

➠ 4x < 50 - 9

➠ 4x < 41

➠ x < 41/4

➠ x < 10.2

'x' is any natural number lesser than 10

The above set in Roster Form would be :

S = {1,2,3,4,5,6,7,8,9,10}

ANSWER

How many words can be formed COOLER condition All letter used

Posted by Princy Yadav 4 years, 5 months ago

CBSE > Class 11 > Mathematics

1 answers

Vivek Kumar 4 years, 5 months ago

6!/2! = 360

ANSWER

Saree condition All letter ysed

Posted by Princy Yadav 4 years, 5 months ago

CBSE > Class 11 > Mathematics

1 answers

Vivek Kumar 4 years, 5 months ago

5!/2! = 60

ANSWER

If sinx +sin ^x=1, show that cos ^4 x+cos^2x=1 .

Posted by Prachi P 4 years, 6 months ago

CBSE > Class 11 > Mathematics

2 answers

Prabhat Kumar 4 years, 5 months ago

Right answer

Pallavi Prasad 4 years, 6 months ago

Sinx + sin^2x = 1 (given) Sinx=1-sin^2x Sinx= cos^2 Squaring both side.So we get Sin^2x=cos^4x 1-cos^2x = cos^4x Cos^4x + cos ^2x = 1 PROVED

ANSWER

_____________1________________ 1 -cosx+2isinx

Posted by Pallavi Prasad 4 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

A is a subset of B implies and implied by A=∅

Posted by Tulika Sipra 4 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

⠀ 4 years, 5 months ago

False

ANSWER

Show that sec^2 +cosec^2 >_ 4

Posted by Tarun Phogat 4 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Y square minus x square minus 6 x square equals to zero

Posted by Likitha Likitha.A 4 years, 6 months ago

CBSE > Class 11 > Mathematics

2 answers

Aryan Soni 4 years, 6 months ago

Y²-7x²=0

Rahul Chandran 4 years, 6 months ago

Y²-7x²

ANSWER

Prove A ∩ ( A U B)’ = φ

Posted by Ayush Prakash 4 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Shade in the venn diagram a) A’ ∩ ( B U C ) b) A’ ∩ (C – B)

Posted by Ayush Prakash 4 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

expansion of sinx

Posted by Sanjay Kumar 4 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

In how many ways 7-digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8 if repetition of digits not allowed

Posted by Aditya Bindal 4 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Shubham Pandey 4 years, 6 months ago

63

ANSWER

Find the conjugate of i³+1

Posted by Sehaj Gamer? 4 years, 6 months ago

CBSE > Class 11 > Mathematics

4 answers

Savitri Mahla 4 years, 5 months ago

Answer: 1+ i Explanation: i^3 + 1=> 1+ (-i) => conjugate= 1+i {i^3 = (i^2)*i => -1*i => -i}

⠀ 4 years, 5 months ago

Infact 1 +i

⠀ 4 years, 5 months ago

1-i³ hoga aadu

Aadya Singh 4 years, 6 months ago

1 + i³
Conjugate = 1- i³ => 1 - (-i) =>( 1+i )

ANSWER

Are there any chances of prrofs coming in exam of trigonometric identity cos(A+B)?

Posted by Shreya Dubey 4 years, 6 months ago

CBSE > Class 11 > Mathematics

2 answers

⠀ 4 years, 5 months ago

No

Pk . 4 years, 6 months ago

No

ANSWER

Solve for x 9(4^-1/x)+5(6^-1/x)<4(9^-1/x)

Posted by Anshika Sharma 4 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

A coin is tossed 3 times. consider the following events: A- No head appears. B- Exactly one head appear . C-Atleast two head appear. Do events A,B,Cform a set of mutually exclusive and exhaustive events?

Posted by Payal Dhiman 4 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Ashutosh Vashisth 4 years, 6 months ago

A. In A part there is a sample space is of 8 and there is only one case in which no head is appear means only tails comes in every case (T,T,T) SO, the answer is 1/8 B. For an event exactly one head appear So for this cases are Head appears in first tossed (H,T,T) Head appears in second tossed(T,H,T) Head appears in third tossed(T,T,H) SO, the answer is 3/8 C.For an event atleast two heads Cases are (H,H,T) (T,H,H) (H,T,H) (H,H,H) Atleast means kam se kam So there are four cases 4/8 =1/2 For exclusive probability of common part is zero And exhaustive event probability of union is equal to sample sapce.

ANSWER

Ex 2.3 q. 2

Posted by Ansh Awasthi Awasthi 4 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Kritika Gupta 4 years, 6 months ago

Subscribe the YouTube channel subject teacher it is very good channel for maths exercise questions......

ANSWER

Set of all x such that x=2x+1

Posted by Jerry S 4 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Jerry S 4 years, 6 months ago

By solving we get x=-1So set A={-1}

ANSWER

formulan of straight line

Posted by Yash Doyal 4 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Let S={1,2,3

Posted by Jerin Binu 4 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

The sum of two numbers is 6 times their geometric mean, show that numbers are in ratio (3+2roor2):(3-2root2)

Posted by Ruthik Karmanchi 4 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

1+√2 belongs to (1,3) is it true or false

Posted by Florence Heikham 4 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Defferentiate among (2,3),[2,3),(2,3]

Posted by Florence Heikham 4 years, 6 months ago

CBSE > Class 11 > Mathematics

1 answers

Manju Patwa 4 years, 6 months ago

( this means only smaller than or greater than but ] this means smaller than, greater than as well as equal to also So (2,3) x is greater than 2 but smaller than 3 . [2,3) x is greater than or equal to 2 but smaller than 3 (2,3] x is greater than 2 but smaller than or equal to 3

ANSWER

2α+2β=5αβ/2

Posted by Harsh Pandit 4 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

If tan (A+B) = 3 tan A then show that sin(2A+B) = 2 SinB

Posted by Rahul Shakya 4 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Principal solution of sinx=√3/2

Posted by Mahak Agrawal 4 years, 6 months ago

CBSE > Class 11 > Mathematics

2 answers

Manju Patwa 4 years, 6 months ago

As sinx is positive in only two quadrants they are- In first or second quadrant so it has two principal solution 1- π\3 (60°) or 2- 2π\3 (120°)

Virender Singh 4 years, 6 months ago

X - 60

ANSWER

Domain of function root x

Posted by Arya Bhardwaj 4 years, 6 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

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