Mathematics
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MAN-MADE
  • Member for 6 years, 7 months
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  • India
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A Story:

One day maths teacher came to class, and said, "I am going to take a quiz today". He did not see any surprised face,.... like everyone knew it! Two days later he brought the answer sheets, and was quite happy because most of them got 100% marks. Well, most of them... Some of those students could not even got 10% marks. Student who got 60-80% marks gathered around the teacher, asking what is wrong in their solution etc. And here I am, sitting at the corner of the room playing video games, because I know, teacher will call me after the class to warn me that I may fail in end of the semester, which I am not going to listen anyway...

I know, I know ... this is not a good story, but this is what I really am.

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Score Newest
answer
63
Proving: "The trace of an idempotent matrix equals the rank of the matrix"
Jul 4, 2017
question
15
Continued Fraction and Random Variable
Jul 3, 2017
question
10
Chebyshev’s inequality is and is not sharp
Jun 7, 2017
answer
10
Is $\int_0^2 f(x) dx$ defined for $f(x)=x,x \ne 1$?
Aug 23, 2017
answer
7
Show that $11^{10} \equiv 1 (\mod 100)$
Aug 28, 2017
answer
7
Find the set of $x>0$ such that the series $\sum\limits_n x^{\ln{n}}$ converges
Aug 13, 2017
answer
6
Show that, for any two integers $a$ and $b$, at least one of the expressions $a^3, b^3, a^3+b^3$ or $a^3-b^3$ will be divisible by $7$.
Aug 26, 2017
question
6
Is the formula $|G|=|\ker \varphi|.|\text{im}\space \varphi|$ connected to the formula $ab = \gcd(a,b) \cdot \operatorname{lcm}(a,b)$? [duplicate]
Jun 25, 2017
answer
5
Prove that: $\sum_{i=1}^n a_i^2\geq \sum_{i=1}^n a_ib_i$
Sep 14, 2017
answer
5
Convergence of Sum of reciprical of Fibonacci numbers
Jul 1, 2017
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