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By using venn diagram prove that: (i)(A^B)'=A'uB' (ii)(AuB)'=A'^B'

Posted by Charanjit Dhaliwal 5 years, 8 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Let U={1,2,3,4,5,6,7,8,9},A={2,4,6,8} and B={2,3,5,7}.Verify that: (i)(AuB)'=(A'^B') (ii)(A^B)'=A'uB'

Posted by Charanjit Dhaliwal 5 years, 8 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Let U={1,2,3,4,5,6,7,8,9} A={1,2,3,4}, B={2,4,6,8} and C={3,4,5,6}. Find: (i)A' (ii)B' (iii)(A^C)' (iv)(AuB)' (v)(A')' (vi)(B-C)'

Posted by Charanjit Dhaliwal 5 years, 8 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

A={3,6,12,15,18,21}, B={4,8,12,16,20},C={2,4,6,8,10,12,14,16} and D={5,10,15,20}. Find: (i)A-B (ii)A-C (iii)A-D (iv)B-A (v)C-A (vi)D-A (vii)B-C (viii)B-D

Posted by Charanjit Dhaliwal 5 years, 8 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

If A={1,2,3,5,4,5},B={4,5,6,7,8},C={7,8,9,10,11} and D={10,11,12,13,14}. Find: (i)AuB (ii)AuC (iii)BuC (iv)A^C (v)B^C (vi)A^B (vii)AuB^C (viii)AuBuD (ix) BuCuD (x)A^[BuC] (xi)[A^B]^[B^C] (xii)[A^D]^[BuC]

Posted by Charanjit Dhaliwal 5 years, 8 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Explain proper set in deeply

Posted by Aditya Singh 5 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Shayan Das 5 years, 8 months ago

Watch it in YouTube

ANSWER

explain the difference and compliment sets

Posted by Sagar Bro 5 years, 8 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Is list of top ten writers of india a set

Posted by Ashwani Singh 5 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Shayan Das 5 years, 8 months ago

No. This is because opinions vary from person to person. Set must be well defined.

ANSWER

What is p(a) in sets?

Posted by Shayan Das 5 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Ashwani Singh 5 years, 8 months ago

P(a)means power set .It is the collection of all subsets of a set. Ex. n[p(A)]=2 to the power m m is no. of elements of a set

ANSWER

(-5i)(i/8)+ (-i)(2i)(-i/8)³+i^-35

Posted by Prakriti Sharma 5 years, 8 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Misclaneous exercise question 31

Posted by Priyanshu Rathi 5 years, 8 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Value of sin2theta

Posted by Shashank Agrawal 5 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Naga Venkat 5 years, 8 months ago

1- cos2 theta

ANSWER

Applied mathematics is for standard or for basic????

Posted by ?Royal Thakur? 5 years, 8 months ago

CBSE > Class 11 > Mathematics

3 answers

?Royal Thakur? 5 years, 8 months ago

Than kyou so much aadu.....

Aadya Singh 5 years, 8 months ago

<font size = "4cm" Color = "black"> Read it ?
<a href="https://ibb.co/mRp15Tb">

</a>

Aadya Singh 5 years, 8 months ago

For both ?

ANSWER

please give the explanation of exercise 1.3 question 1 part 3,4,5.............

Posted by Aditi Dahiya 5 years, 8 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

222+333

Posted by Vikas Vikas 5 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Shreya_ S❤️ 5 years, 8 months ago

666-111??

ANSWER

If tanA =1 and tan B =√3, then cosA•cosB-sinA•sin B is equal to?

Posted by Siddharth Tiwari 5 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Aadya Singh 5 years, 8 months ago

<a href="https://ibb.co/pxWxFZW">

</a>
ye log apka solution ?

ANSWER

Prove that : tan 15°+cot 15°=4

Posted by (◍•ᴗ•◍)❤ . 5 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Yogita Ingle 5 years, 8 months ago

tan 15° + cot 15°
= sin 15° / cos 15° + cos 15° / sin 15°
= (sin²15° + cos²15°) / (sin 15° cos 15°)
= 1 / (1/2 sin 30°)
= 2 / sin 30°
= 2 / (1/2)
= 4

ANSWER

Is non-attending school system best for the preparation of IIT-JEE?

Posted by Pragya Sharma 5 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Villain ?? 5 years, 8 months ago

Definitely

ANSWER

Ncert example 17

Posted by Reena Mishra 5 years, 8 months ago

CBSE > Class 11 > Mathematics

2 answers

Aditya Chauhan 5 years, 8 months ago

Whats the doubt in it !

Aditya Chauhan 5 years, 8 months ago

Its very simple

ANSWER

Prove that tan^2A-sin^2A=tan^2A-sin^2A

Posted by Naresh Nagal 5 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Arjun Kashyap 5 years, 8 months ago

Ye to phle se equal h

ANSWER

The first term of a GP is 1.If the sum of 3rd and 5th term is 90.Find the common ratio of GP

Posted by Yashvi Singh Raghuvanshi 5 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Vinkal Kamboj 5 years, 8 months ago

Given a=1 , ar²+ar⁴=90 ar²(1+r²)=90 1r²(1+r²)=90 Let r²= y y(1+y)=90 y²+y-90=0 y²+10y-9y-90=0 y(y+10)-9(y+10)=0 (y-9)(y+10)=0 Changing y by r² (r²-9)(r²+10)=0 (r²+10) is an imaginary number so neglect it r²=9 r=3

ANSWER

equilateral triangle DEF is inscribed in equilateral triangle ABC as shown with DE is perpendicular to BC. The ratio of the area of triangle DEF to the area of triangle ABC is

Posted by Aman Barnwal 5 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Insight Coaching 5 years, 8 months ago

Let side of triangle ABC be (2x)m and side of triangle DEF be (x)m. In∆ABC ~ ∆DEF (by AA ) since both ∆ are equilateral ∆. now, ar(∆DEF):ar(∆ABC)=x²:x²/4 =1:4 Hence ratio of area of ∆DEF to the area of ∆ABC is 1:4

ANSWER

Show that the set of letters needed to spell "cataract" and the set of the letters needed to spell "TRACT" are equal.

Posted by Charanjit Dhaliwal 5 years, 8 months ago

CBSE > Class 11 > Mathematics

2 answers

Insight Coaching 5 years, 8 months ago

In 'CATRACT' the distinct set of letters is {C,A,T,R} while in "TRACT" the distinct set of letters is {T,R,A,C} . So, { C,A,T,R}={T,R,A,C} are equal. Hence set of letters needed to spell both the words are equal.

Piyush Chourasia 5 years, 8 months ago

CATARACT : distinct letters are { C,A,T,R} TRACT : distinct letters are {T,R,A,C} HENCE {C,A,T,R}={T,R,A,C} both the sets have same distinct letters

ANSWER

Are the following pairs of sets equal? Give reasons. (1)A={2,3},B={x:x is solution of x2+5x+6=0} (2)A={x:x is a letter of word "WOLF"},B={x:x is a letter of "FOLLOW"} (3)A={x:x is a letter in the word "LOYAL"},B={x:x is a letter of the word "ALLOY"}

Posted by Charanjit Dhaliwal 5 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Piyush Chourasia 5 years, 8 months ago

1. NO, THEY ARE NOT EQUAL x^2+5x+6 = {-2,-3} which is not equal to {3,2} 2. YES THEY ARE EQUAL WOLF= {W,O,L,F} FOLLOW= {F,O,L,W} both sets are equal.. 3. YES THEY ARE EQUAL concept same as above plase try yourself...

ANSWER

Which of the following sets are equal? (1)A={1,2,3} (2)B={x€R:n2-2n+1=0} (3)C={1,2,3,2} (4)D={x€R:n3-6n2+11n-6=0}

Posted by Charanjit Dhaliwal 5 years, 8 months ago

CBSE > Class 11 > Mathematics

0 answers

ANSWER

Which of the following sets are finite and which are infinite? (1) set of concentric circles in a plane. (2) set of letters of the english alphabets. (3){x€N:x>5} (4){x€R:0<x<1}

Posted by Charanjit Dhaliwal 5 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Insight Coaching 5 years, 8 months ago

(1) Infinite set. (2) Finite set. (3) Finite set. (4) please complete the option.

ANSWER

Qhich of the following are example of empty set: (1) the set of all even natural number divided by 5 (2) {x:x is natural number x<8 and multification x>12} (3){x:x is point common of any parallel lines}

Posted by Charanjit Dhaliwal 5 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Tanvi Sharma 5 years, 8 months ago

3 one

ANSWER

If (x-2) and (x-3) are factors of then which of the following is not true.

Posted by Sumit Joon 5 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Shreya_ S❤️ 5 years, 8 months ago

No options?

ANSWER

Sec2a

Posted by Surya Rathi 5 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Insight Coaching 5 years, 8 months ago

Sec2a=2Seca when a=0.

ANSWER

Which braces are used in a set

Posted by Vakul Chaudhary 5 years, 8 months ago

CBSE > Class 11 > Mathematics

4 answers

Vakul Chaudhary 5 years, 7 months ago

Curly braces{}

Insight Coaching 5 years, 8 months ago

{ }: these brackets are used in a set.

Aditya Pratap Singh 5 years, 8 months ago

Curly brackets { }

... ... 5 years, 8 months ago

{ }

ANSWER

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