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Reference: FresnelC

FresnelC(x) is the Fresnel cosine integral.

FresnelC(x) = ∫cos(t^2)dt from 0 to x.

Example: spiral ≔ createImage("❨FresnelC(t), FresnelS(t)❩", "t", [-10, 10, 0.01])
         drawLines("spiral")