ABDELRAHMAN SAID ABDELRAHMAN

Questions (8)

 5 Prove that ${ a }^{ 2 }+2ab+{ b }^{ 2}\ge 0$ without using $(a+b) ^{ 2 }$ 3 prove that $n$ is divisible by $8$ 1 Find the relationship between the sides of a triangle and the diameter of the circumscribed circle. [duplicate] 0 How do I Find the value of this expression? 0 Find sum of two primes if their difference is equal to $3{ n }^{ 2 }-5n-1$

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 1 Find the limit distribution of $Y_n =\frac{\Sigma_{i=1}^{n}X_i}{\sqrt{\Sigma_{i=1}^{n}|X_i|^2} }$. 1 For what $p$ values does the series $\sum_{n=1}^\infty \sqrt{n^{p-4}}$ converge? 1 How to expand $(x_1 + x_2 + x_3 + x_4 + x_5 +\cdots+x_n)^{2}$ 0 Show $a+(a+d)+(a+2d)+\cdots+(a+nd)=a(n+1)+d\frac{n(n+1)}{2}$

Tags (17)

 1 algebra-precalculus × 5 1 calculus 1 probability-theory × 2 1 sequences-and-series 1 probability × 2 0 elementary-number-theory × 2 1 law-of-large-numbers 0 number-theory × 2 1 central-limit-theorem 0 polynomials

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 Mathematics 93 rep 7 Electrical Engineering 11 rep 3 Mathematica 1 rep 1 Physics 1 rep 1