Prove the orthogonality relations (28.4) for the trigonometric system. Equation 28.4 (-T,T) cos(jx) cos(kx) dx = (-,)
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Prove the orthogonality relations (28.4) for the trigonometric system.
Equation 28.4
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(-T,T) cos(jx) cos(kx) dx = (-,) L sin (lx) sin(mx) dx = (-TT) 0, , 2, if lm, T, if l=m, cos(kx) sin(x) dx=0 for all k, l, if kj, if k=j> 1, if k=j=0, 0,
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