MHB Calculating Fourier Co-Efficent An of an Even Square Function

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The discussion revolves around calculating the Fourier coefficient An for an even square function. The original poster struggled with the problem but ultimately concluded that their answer, 4sin(npi/2)/npi, was correct, contradicting the teacher's provided answer of -4/npi. They expressed appreciation for any help but later confirmed their solution was accurate. The thread highlights the importance of verifying answers in mathematical problems. The resolution underscores the complexity of Fourier series calculations and the potential for discrepancies in educational settings.
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Nevermind guys, it appears that my answer is correct.
 
Metalsie said:
Nevermind guys, it appears that my answer is correct.

Your follow-up post to let us know what you found is greatly appreciated. (Yes)
 
The answer provided by the teacher (-4/npi) was basically wrong and mine was right. Sorry.

Here is the "same" problem solved

Calculating Fourier Series 1
 
Thread 'Problem with calculating projections of curl using rotation of contour'

Thread 'Problem with calculating projections of curl using rotation of contour'

Hello! I tried to calculate projections of curl using rotation of coordinate system but I encountered with following problem. Given: ##rot_xA=\frac{\partial A_z}{\partial y}-\frac{\partial A_y}{\partial z}=0## ##rot_yA=\frac{\partial A_x}{\partial z}-\frac{\partial A_z}{\partial x}=1## ##rot_zA=\frac{\partial A_y}{\partial x}-\frac{\partial A_x}{\partial y}=0## I rotated ##yz##-plane of this coordinate system by an angle ##45## degrees about ##x##-axis and used rotation matrix to...
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