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 Dec15 awarded Scholar Dec15 comment Finding a normalization constant Yes, my previous comment is not clear (I was aware that the outer product is equivalent to a sum in the exponent). Anyway, it really looks that I will not find a nice solution. Thx. Dec15 accepted Finding a normalization constant Dec15 comment Finding a normalization constant @joriki Actually, the outer product is what bothers me. Dec15 awarded Commentator Dec15 comment Finding a normalization constant @joriki Hmm thx, though, I can't get a closed solution. The indices confuse me :( Dec15 comment Finding a normalization constant @Marek: Yes, I have tried that, and it's really not pretty. I thought that maybe there is a nice trick that I misses. Dec15 revised Finding a normalization constant added 3 characters in body Dec15 comment Finding a normalization constant @joriki: Yes, you right. Thx Dec12 revised Is this a correct way of thinking of Fourier transforms Latex edit...... Dec12 comment Is this a correct way of thinking of Fourier transforms I really think that en.wikipedia.org/wiki/Fourier_transform will answer all your questions. Dec12 suggested approved edit on Is this a correct way of thinking of Fourier transforms Dec12 comment Find The value of $a,b,c$. What you wrote is not the piecewise version (sinx).. Dec11 comment What does $\forall$ mean? It means : "for all" Dec11 revised When to use $f(x)=Ce^{kx}$ vs $f(x)=Ca^{kx}$? Editing the title in Latex... Dec11 suggested approved edit on When to use $f(x)=Ce^{kx}$ vs $f(x)=Ca^{kx}$? Dec11 asked Finding a normalization constant Dec8 comment Calculating probability of some event using geometric considerations @fedja, I assume that $v\neq 0$. Moreover, $v$ is a perturbed of $AU$. Thx for the correction. Dec8 revised Calculating probability of some event using geometric considerations deleted 1163 characters in body Dec7 answered $f(x+2)−f(x)=(6x+4)^2$ and $f(0)=−16$. Find $f(5)$