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pi-22/7

Posted by Anil Patel 6 years, 9 months ago

CBSE > Class 11 > Mathematics

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Prove by mathematical induction that n(n+1) is even.

Posted by Vikash Kumar 6 years, 9 months ago

CBSE > Class 11 > Mathematics

1 answers

Aditya Sharma 6 years, 9 months ago

step 1 p(n) = 1 1 (1+1) = 1 x 2 = 2 p (1) is true step 2 let p(k) = k (k+1) = 2 z where z is a natural no. be true k2 + k =2 z k2 = 2 z - k - 1 step 3 p(k+1) = k+1(k +1 +1) is true we have to prove this (k+1)( k+2) = k2 + 3 k + 2 2 z - k +3 k +2 = 2 z + 2 k + 2 - by 1 2[ z +k + 1] it will be a even no. which means that p(k+1) is true

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tan4x = 4tanx (1-tan^2x)/1-6tan^2x+tan4x

Posted by V Unnati 6 years, 9 months ago

CBSE > Class 11 > Mathematics

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Find (x+1)^2+(x-^1) hence or otherwise Evaluete (√2+1)^6 +(√2-1)^6

Posted by Tushar Thakur 6 years, 9 months ago

CBSE > Class 11 > Mathematics

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4x+3 <6x+7 solve

Posted by Aditya Sharma 6 years, 9 months ago

CBSE > Class 11 > Mathematics

1 answers

Ovais Dar 6 years, 9 months ago

4x+3 <6x+7 4x+3-3 <6x+7-3 4x<6x+4 4x-6x <6x-6x+4 -2x <4 -2x÷2 <4÷2 -x <2 X>2

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Intersecting the x axis at the distance of 3 units to the left of the origin with slope -2

Posted by Damini Thakural 6 years, 9 months ago

CBSE > Class 11 > Mathematics

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Write the sum of first n odd numbers

Posted by Vikash Kumar 6 years, 9 months ago

CBSE > Class 11 > Mathematics

1 answers

Gaurav Seth 6 years, 9 months ago

Natural odd no:s forms an A.P

1,3,5,7 ....

a = 1 , d = 2

Sn = n/2 [ 2a + [n-1]d ]

= n/2 [ 2 + 2n - 2 ]

= n/2 [ 2n ]

= n²

Sum of n natural odd no:s = n²

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Write a subject of set of the (abc)

Posted by Sanjana Yadav 6 years, 9 months ago

CBSE > Class 11 > Mathematics

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In NCERT book chapter 1 exercise 1.5 question no. 4 (b) why the union sign didn't changed in RHS?

Posted by Akash Adhikary 6 years, 9 months ago

CBSE > Class 11 > Mathematics

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Books change hongi kya 2019-20 ma jo 2018-19 ma thi

Posted by Y Jj 6 years, 9 months ago

CBSE > Class 11 > Mathematics

1 answers

@ Aashu 6 years, 9 months ago

Nahi g

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What is Cube root of A multiplied by cube root of A?

Posted by Sneh Shah 6 years, 9 months ago

CBSE > Class 11 > Mathematics

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Should i choose maths in 11 class!??

Posted by Zahira Malik 6 years, 9 months ago

CBSE > Class 11 > Mathematics

5 answers

Aditya Sharma 6 years, 9 months ago

ku ni...

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J K 6 years, 9 months ago

If u r interested

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Unknown Guy 6 years, 9 months ago

Iife barbad ho jaygi

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Abhinav Yadav 6 years, 9 months ago

According to your interest

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Navjeet Singn 6 years, 9 months ago

Afcourse

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10,36,136,528, ..... . What is the next number

Posted by Lohit Hazarika 6 years, 9 months ago

CBSE > Class 11 > Mathematics

1 answers

Rajib Borah 6 years, 9 months ago

12256

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Sinx/ x find derivative

Posted by Aryan Negi 6 years, 9 months ago

CBSE > Class 11 > Mathematics

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How sets chapter are studied

Posted by Himanshu Jha 6 years, 9 months ago

CBSE > Class 11 > Mathematics

1 answers

Prakash Roy 6 years, 9 months ago

It can only be learnt by studying the theory part, only some formulas are there in that chapter. So study the Sets chapter by learning the definitions. I hope you can get good marks from that chapters when you study like this. Thanks [Prakash Roy]...!!!

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2436+9876656765635667

Posted by Sathvik 3Sv 6 years, 9 months ago

CBSE > Class 11 > Mathematics

1 answers

Prakash Roy 6 years, 9 months ago

You will get the answer by using the calculator and you know how to calculate it by writing it by drawing a table and calculate it. If you don't know how to calculate, you can prefer the internet browser for your answer. I hope you are clear. THANKS

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Out of the 100students; 15passed in english, 12 passed in maths, 8 in science, 6 in English and maths,7 in maths and science, 4 in english and science, 4 in all three. Find how many passed 1)in english and mathematics but not in science? 2)in maths and science but not in English.

Posted by Rishi Khurana 6 years, 9 months ago

CBSE > Class 11 > Mathematics