The Fourier Series

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Enter functions as expression in terms of "x". Usual rules apply. For exponents use "^", e.g. "e^x".
Scroll the wheel to change the number of terms in the sum.

Supporting Material

Good functions to try (non-specified coefficients are 0)
  • A linear function, such as f(x) = x;
  • f(x) = sin(x) + sin(10*x);
  • 1 + x^2/4
  • x^3/10
  • x^3/100 + sin(x)