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 Dec15 awarded Caucus Oct23 answered What is the inverse of $f(x)=\frac{e^x+e^{-x}}{e^x-e^{-x}}$? Sep22 comment How to write $a^{ix}$ in terms of $\sin(x)$ and $\cos(x)$? $e^{\ln(a)}$ is single valued for $a \ne 0$. Sep20 comment How to write $a^{ix}$ in terms of $\sin(x)$ and $\cos(x)$? $a=e^{\ln a}$ is true for negative values of a: $(a=e^{\ln a}, a\neq 0)$. May2 answered what will be the answer of this limit. Apr2 awarded Informed Dec2 revised Can this gravitational field differential equation be solved, or does it not show what I intended? corrected error in markup Dec2 suggested approved edit on Can this gravitational field differential equation be solved, or does it not show what I intended? Sep8 awarded Yearling Sep2 answered What is the pattern to this sequence? Jul22 awarded Citizen Patrol Jul18 reviewed No Action Needed Statistics formula for wifi positioning. May26 reviewed Reviewed Poisson point process convergence May26 suggested rejected edit on Poisson point process convergence May12 reviewed No Action Needed Solve $2^{2x} + 9e^{-2x} = 6$ for x using substitution. May11 awarded Custodian May11 reviewed No Action Needed When is an intersection of varieties finite May6 comment Can this gravitational field differential equation be solved, or does it not show what I intended? The correct differential equation is: $- \frac{G M m}{r^2} = \mu \ddot r$ where $\mu = \frac{M m}{M+m}$ is the reduced mass. May1 comment Can this gravitational field differential equation be solved, or does it not show what I intended? The correct equation is: $$- \frac{G M m}{r^2} = \frac{M}{M+m} m \ddot r$$ Apr30 answered Can this gravitational field differential equation be solved, or does it not show what I intended?