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reviewed Leave Open Calculus for Economics
3h
reviewed Leave Open Is there an equation for the integral?
Jul
30
awarded  Nice Answer
Jul
26
revised Fourier series & Fourier transformation
edited tags
Jul
25
reviewed Leave Open Find equation of a line intersecting parabola at one point only?
Jul
25
reviewed Close Is it common to decide not to go to graduate school after extensive undergraduate research experience?
Jul
25
reviewed Close Evaluate the integral: $\int\ x\ 2^{x^2}\ dx$
Jul
25
reviewed Leave Open Comparison of integrals
Jul
20
revised Prove that $\sin x =2t/(1+t^2) $ and $\cos x =(1-t^2)/(1+t^2), t=\tan(x/2)$
new improvement in title formatting
Jul
20
comment Prove that $\sin x =2t/(1+t^2) $ and $\cos x =(1-t^2)/(1+t^2), t=\tan(x/2)$
Also here and here.
Jul
20
revised Prove that $\sin x =2t/(1+t^2) $ and $\cos x =(1-t^2)/(1+t^2), t=\tan(x/2)$
Improved formatting
Jul
17
awarded  Nice Question
Jul
7
revised Finding the Laurent series of $f(z)=1/((z-1)(z-2))$
Removed a %-sign in TeX
Jul
4
revised Optimization of solve
Fixed spelling typo in title
Jul
4
revised Prove a number is composite
Added the (algebra-precalculus) tag
Jul
4
revised Prove a number is composite
Improved formatting
Jun
28
revised Evaluate the indefinite integral $\int \frac{\cos \theta}{ \sqrt{2 - 9 \sin^2 \!\theta}} \mathrm{d}\theta$
Added the (calculus) and (indefinite-integrals) tag
Jun
27
revised Recurrence relation (linear, second-order, constant coefficients)
Added (discrete-mathematics) tag
Jun
27
revised Deriving a trivial continued fraction for the exponential
Added (number-theory) tag
Jun
26
revised Continued fraction for $\frac{1}{e-2}$
Added (number-theory) tag