gammaincinv
Inverse of regularized incomplete gamma function
Description
X = gammaincinv(
returns the inverse of the regularized lower incomplete gamma
function evaluated at the elements of Y
,A
)Y
and
A
, such that Y = gammainc(X,A)
. Both
Y
and A
must be real. The elements of
Y
must be in the closed interval [0,1]
and
A
must be nonnegative.
Examples
Input Arguments
More About
Tips
When the regularized upper incomplete gamma function is close to 0, specifying the
'upper'
option to calculate the upper inverse function is more accurate than subtracting the regularized lower incomplete gamma function from 1 and then taking the lower inverse function.
References
[1] Olver, F. W. J., A. B. Olde Daalhuis, D. W. Lozier, B. I. Schneider, R. F. Boisvert, C. W. Clark, B. R. Miller, and B. V. Saunders, eds., Chapter 8. Incomplete Gamma and Related Functions, NIST Digital Library of Mathematical Functions, Release 1.0.22, Mar. 15, 2018.
Extended Capabilities
Version History
Introduced in R2009a