2016年12月8日 · In addition, I put that the answer to this problem is x=pi/3+2(pi)n and x=5pi/3+2(Pi)n because for this problem, isolating x will give: cosx=1/2, and taking the inverse, …

2023年11月16日 · I wanted to know why we add 2pi n (or any integer) whilst solving a trig equation and how to check if your solutions are right. For example, when doing -3/2 = -2 + …

2015年5月17日 · A standing wave has k=pi*n/L, because you need the displacement to be zero at each end. This means that the largest wavelength you can have is 2L. The other situation is …

2022年6月18日 · If I specified a sequence as sin(2 * pi * n * 5/6) for n={0, …, N-1} and zero for other n, then I have an N-point finite length sequence that I could apply an N-point DFT. The …

2014年6月17日 · You isolate the trig function to get csc 2 = 4/3, and therefore sin 2 = 3/4, sin = +/- sqrt (3)/2, and you take the inverse sine of that. So x = pi/3, 2pi/3, -pi/3, -2pi/3. From [-pi, pi]. …

2016年4月21日 · If n is odd it will always be a multiple of pi/2. At pi/2, 3pi/2, 5pi/2 etc cos will always come out to 0. If n is even or 0 it will always be a multiple of pi. Cos alternates between …

2023年6月11日 · As above, I can't make P=(2*PI*N*T)/60 work where N and T are cells. Help is appreciated, thanks :) This is the equation I need to use and I have the values in exExcelcel …

2015年1月8日 · The term is: cos(pi*n/2), with n = 1,2,3,4,5,... I remember that you can convert these things into power series, because they usually alternate between 0,1, or -1. In this case …

2020年5月28日 · The usual DTFT "frequency" variable is actually a frequency-dependent angular variable:theta = omega · T = 2 pi f T, where T is the sample period.Thus, fs/2 is mapped to 2 pi …

A way to visualize this would be to use the definition e = (1+1/N) N and subsequently e x = (1+x/N) N. If you start plotting this for x = 2 pi i and increasing N's you can see how the …