Toronto Math Forum
APM3462018S => APM346Lectures => Topic started by: Jingxuan Zhang on March 06, 2018, 08:06:25 PM

Could anyone kindly inform me one more time the origin of the scalar multiple in finding Fourier coefficients? I know these are supposed be inner product, but I don't remember a scaling there.
Also, chap 4.3 remark 2 has some obvious typo. (Somewhere 2's in $L^2$'s are missing).

Well, it is $1/\X_n\^2$ with $X_n$ corresponding basis function.

As if when we do the projection of $b$ on $a$ in Euclidean space, the coefficient is given by $a\cdot b / a^2$?

Exactly. I told you so