Serie de Fourier de t^2 | Desmos

Expression 1: "S" Subscript, "f" , Baseline left parenthesis, "t" , right parenthesis equals 4 thirds plus Start sum from "n" equals 1 to "m" , end sum, StartFraction, 16cos left parenthesis, "n" pi , right parenthesis Over "n" squared pi squared , EndFraction cosine left parenthesis, StartFraction, "n" pi Over 2 , EndFraction "t" , right parenthesis

1

Expression 2: "m" equals 6

1

30

2

3

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