About Symbolic Functions

Functions > Symbolic Functions > About Symbolic Functions

The following symbolic functions can only be evaluated using the symbolic evaluation operator (

). They cannot be evaluated using the numerical evaluation operator (=). To return numerical results for these functions, use the keyword float.

• FresnelC, FresnelS—Fresnel functions

• LambertW—Lambert functions

• Δ—Dirac delta functions

• Ci, Chi, Si, Shi—Integral functions

• Psi—Digamma and polygamma functions

• Ei—Exponential integral functions

• dilog, polylog—Logarithmic functions

• beta, hypergeom and zeta—Beta, hypergeom, and Zeta functions

• denom, fact2, IsPrime, numer—Denom, double-factorial, IsPrime, and Numerator functions