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Fresnel Integral
07-30-2019, 08:15 PM
Post: #3
RE: Fresnel Integral
(07-30-2019 10:35 AM)parisse Wrote:  With the latest firmware, you will get (from CAS) a symbolic answer with erf and complex numbers.
int(cos(x^2),x,0,t)
int(cos(x^2),x,0,1000);
evalf(int(cos(x^2),x,0,1000))
If you try to compute the integral numerically:
int(cos(x^2),x,0,1000.0)
the quadrature fails because the integrand is varying much too fast (especially near 1000), this is why you get a warning on the terminal, and the answer returned is a vector of 2 values corresponding to the last computed approximations.

Thanks, I updated my firmware.

Are there any plans to have it work with infinity? I get an error message stating that erf is not yet supported with complex values and limits.

Just curious, thanks.
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Messages In This Thread
Fresnel Integral - LCieParagon - 07-29-2019, 10:42 PM
RE: Fresnel Integral - parisse - 07-30-2019, 10:35 AM
RE: Fresnel Integral - LCieParagon - 07-30-2019 08:15 PM
RE: Fresnel Integral - Leviset - 07-30-2019, 10:11 PM
RE: Fresnel Integral - LCieParagon - 07-30-2019, 10:37 PM
RE: Fresnel Integral - parisse - 07-31-2019, 09:40 AM



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