Signals and Systems

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SIGNIFICANT POINTS

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

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