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Anika Kapoor
Subject: Maths
, asked on 8/7/17
Please tell the solutions to Eg. 2 & 5
Answer
1
Dilna
Subject: Maths
, asked on 6/7/17
using principle of mathematical induction prove that 4^n-3n-1 is a multiple of 9
Answer
1
Dilna
Subject: Maths
, asked on 4/7/17
prove by PMI that 2+6+18+......+2.3^(n-1) = (3^n)-1
Answer
1
Akchunya Chanchal
Subject: Maths
, asked on 25/6/17
prove by induction (n+3)
^{2}
<=2
^{n+3}
Answer
1
Siraj
Subject: Maths
, asked on 18/6/17
Prove that (1+x)^n greater than or equal to (1+nx), for all natural number n, where x > -1. I did not understand where the kx^2 went (last step) in the answers given by the experts. EXPERTS PLEASE HELP
Answer
2
Raqeeb ..
Subject: Maths
, asked on 10/6/17
1/2.5+ 1/5.8 +...+ upto n terms = n/6n+4
Answer
1
Yashaswi Agrawal
Subject: Maths
, asked on 17/5/17
If n∈N and (2.1+1) + (2.2 + 1) + (2.3 + 1) + ... + (2.n + 1) = n
^{2}
+ 2n + 5 is true for n=m, then prove that it is also true for n=m+1. Can we conclude that it is true for all n∈N ?
Answer
1
Pranjal
Subject: Maths
, asked on 29/4/17
solve 28 step by step
$28.\phantom{\rule{0ex}{0ex}}1\times 1!+2\times 2!+3\times 3!+...+\mathrm{n}\times \mathrm{n}!=\left(\mathrm{n}+1\right)!-1\mathrm{for}\mathrm{all}\mathrm{N}\in \mathrm{N}$
Answer
1
Simranpreet Singh
Subject: Maths
, asked on 14/3/17
Experts and frndss...im so happy I can't explain..earlier 70/70 marks in phy...and now...I got 100/100 marks in maths...omg...im so cheerful ..this is because of ur quick and continuous responses...thnku experts..now bless me to score better in my CBSE class 12.
Answer
1
Aditi Sharma
Subject: Maths
, asked on 8/3/17
1+2+3+......n?1/8(2n+1)^2
Answer
1
Aditi Sharma
Subject: Maths
, asked on 8/3/17
Solve this:
Answer
1
Aditi Sharma
Subject: Maths
, asked on 8/3/17
Solve this:
Answer
1
Simranpreet Singh
Subject: Maths
, asked on 7/3/17
Prove by PMI that :- 1 × 1! + 2×2! + 3×3! + ... + n × n! = (n+1)! - 1
Answer
1
Simranpreet Singh
Subject: Maths
, asked on 7/3/17
In this question..P.T (1+x)
^{n}
>= (1+nx) [for x > -1]...in answer, for n=1...it came.. (1+x) >= (1+x)....so how it's true?....recently I asked a question that whether 0>=0..and the expert said that it's flase...so how this statement is true...clear my doubt..
Answer
1
Abinanth.t
Subject: Maths
, asked on 5/3/17
A box contains 6 red marbles, 5 blue marbles and 4 green marbles. 3 balls are drawn from the box, What is the probability that
(a) All will be blue?
(b) At least one will be green?
Answer
1
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^{2}<=2^{n+3}^{2}+ 2n + 5 is true for n=m, then prove that it is also true for n=m+1. Can we conclude that it is true for all n∈N ?$28.\phantom{\rule{0ex}{0ex}}1\times 1!+2\times 2!+3\times 3!+...+\mathrm{n}\times \mathrm{n}!=\left(\mathrm{n}+1\right)!-1\mathrm{for}\mathrm{all}\mathrm{N}\in \mathrm{N}$

^{n}>= (1+nx) [for x > -1]...in answer, for n=1...it came.. (1+x) >= (1+x)....so how it's true?....recently I asked a question that whether 0>=0..and the expert said that it's flase...so how this statement is true...clear my doubt..(a) All will be blue?

(b) At least one will be green?