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Homework Statement
is the author wrong ? i was told that the f(x) = 0.5(a_0) +Σ(a_n)cos (nπx / L ) ........ but , in the example(photo2) , the author ignore the L , which the author gave f(x) = 0.5(a_0) +Σ(a_n)cos (nπx ) +......
Homework Equations
The Attempt at a Solution
P/ s : i have tried to make some correction beside the working , is it correct ?[/B]
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