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LME Reference — mathematical functions 159 See also asinh, acosh, atan beta Beta function. Syntax y = beta(z,w) Description beta(z,w) gives the beta function of z and w. Arguments and result are real (imaginary part is discarded). The beta function is defined as B(z, ) = Z 1 t z−1 (1 − t)−1 dt 0 Example beta(1,2) 0.5 See also gamma, betaln, betainc betainc Incomplete beta function. Syntax y = betainc(x,z,w) Description betainc(x,z,w) gives the incomplete beta function of x, z and w. Arguments and result are real (imaginary part is discarded). x must be between 0 and 1. The incomplete beta function is defined as Z 1 (z, ) = t z−1 (1 − t)−1 dt B(z, ) 0
