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# scipy.special.btdtr

`scipy.special.``btdtr`(x1, x2, x3[, out])
  y=btdtr(a,b,x) returns the area from zero to x under the beta density function: gamma(a+b)/(gamma(a)*gamma(b)))*integral(t**(a-1) (1-t)**(b-1), t=0..x). SEE ALSO betainc

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