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Mathematics
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H.Linkhorn

I'm an A-level student in maths, further maths, chemistry and physics; i also help out at my local school helping in general revision and giving demonstrations to children to help gain their interest in science.

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  • Portsmouth, UK
  • Member for 1 year, 2 months
  • 131 profile views
  • Last seen yesterday

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Top Posts (74) All Questions Answers | Votes Newest

7 Sigma notation for sum of $\ln(x)^2$ from $2$ to $20$ with steps of $0.5$ Feb 10
5 Evaluate $\sum_{r=2}^{\infty} \frac{2-r}{r(r+1)(r+2)}$ Dec 31 '18
5 Integral of $\int\frac{\sin x}{\sin x+\cos x}dx$ Dec 12 '18
4 Sum of two infinite complex geometric sums Nov 15 '18
3 summation of $\sum_{n=1}^\infty \frac {2^n+4^n}{6^n}$ Sep 28 '18
3 If $z=\cos\theta + i\sin \theta$ prove $\frac{z^2-1}{z^2+1}=i\tan\theta$ Jan 14
3 If $P(X)=0.2$, $P(A|X)=0.4$ and $P(A|X')=0.5$ find $P(A\cup X)$. Feb 21
3 the roots of the equation $ax^2 +bx+c=0$ are $\alpha$ and $\beta$ find an equation with roots $\alpha + \beta$ and $\alpha \beta$. Feb 22
2 Normal approximation of the Binomial distribution Mar 2
2 Solving $4\sinh(2x)=\cosh(2x)$ Apr 10
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