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 Mar22 suggested approved edit on Can you express $\cos(\frac{x}{2})\sin(x)$ as a linear combination of even multiples of $\frac{x}{2}$ in sin and odd ones in cos? Mar22 revised RSA Encryption with number theory edited tags Mar22 revised Counting Boys and Girls in a Team edited tags Mar22 comment Set prove homework problem By the way, Isn't it better to replace number-theory tag with set theory? Mar21 answered Trignometry - Cosine Formulae Mar21 revised How many possible iPhone passwords? added 217 characters in body Mar21 answered How many possible iPhone passwords? Sep13 comment What impedances can be generated from combination of impedances? @WillieWong : Yes, All of the resistors must be used Sep13 revised What impedances can be generated from combination of impedances? added 1 characters in body Sep13 comment What impedances can be generated from combination of impedances? If the answer to some questions is easy or you think I can work it out myself, please provide a hint Sep13 asked What impedances can be generated from combination of impedances? Sep13 revised Equality $2^ \sqrt{2\lg n}$ = $n^ \sqrt{\left(\frac{2}{\lg n}\right)}$ added 29 characters in body Sep13 comment Equality $2^ \sqrt{2\lg n}$ = $n^ \sqrt{\left(\frac{2}{\lg n}\right)}$ @did I think this post is supposed to be a HINT for OP not a formal proof. Sep13 comment Equality $2^ \sqrt{2\lg n}$ = $n^ \sqrt{\left(\frac{2}{\lg n}\right)}$ @did $n>1 \implies ...$ and the rest. Is it what you mean? Sep12 revised Equality $2^ \sqrt{2\lg n}$ = $n^ \sqrt{\left(\frac{2}{\lg n}\right)}$ added 75 characters in body Sep12 answered Equality $2^ \sqrt{2\lg n}$ = $n^ \sqrt{\left(\frac{2}{\lg n}\right)}$ Sep12 revised Equality $2^ \sqrt{2\lg n}$ = $n^ \sqrt{\left(\frac{2}{\lg n}\right)}$ edited tags Sep12 comment How to find the equation from data? @joriki. I fixed it Sep12 revised How to find the equation from data? edited tags Sep12 revised Integration of $\int \sqrt{x\sqrt{2x}} dx$ and $\int 3^x e^x dx$ format:latex