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 Aug 9 accepted Fraction of original velocity in series of elastic collisions Jun 23 accepted Roots of a sixth degree polynomial Jun 22 accepted Integrating $\frac{1}{1+e^x}$ May 30 accepted Question on Spearman's Rank Correlation Coefficient May 13 accepted Inductive proof that every term is a sequence is divisible by 16 Apr 18 accepted Solving equations of the form $ae^x + bx +c =0$ Apr 17 accepted Probability of success in $n$ trials Apr 7 accepted Why does this work, and why is it wrong? Feb 22 accepted Series question with unknown limit Jan 7 accepted Proof that $e^x$ can be expressed in a series of ascending powers of $x$ Dec 3 accepted Differentiation with the quotient rule Nov 11 accepted Finding the coefficient of $x^{10}$ Sep 21 accepted Find the range of values that $x$ can take if $9 \log_x5 = \log_5x$ Jul 29 accepted Common logarithm question May 20 accepted GCSE maths question concerning indices May 15 accepted Proving the quadratic formula (for dummies) May 10 accepted The perimeter of the rectangle is $20$, diagonal is $8$ and side is $x$. Show that $x^2-10x+18=0$ Mar 9 accepted How to show $\frac{300}{v} - \frac{300}{v+20} = 1.25$ Sep 22 accepted How to calculate $(3+4i)\cdot(1+i)$