Signals and Systems

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2.1 FOURIER SERIES

If any periodic function f(t) satisfies Dirichlet conditions, it is possible to express it in an infinite series as follows:

f(t) = a₀ + a₁cos ωt + a₂cos 2ωt + … + a_ncos nωt+ b₁sin ωt + b₂sin 2ωt + …. + b_nsin nωt (2.1)

where the co-efficients a₀, a_n and b_n are given by

The constants a₀, a_n and b_n given in ...

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