Correction to Abramowitz & Stegun page 80
2017-09-04, Stig Rosenlund

When implementing the function asin() for complex arguments in Proc Mbasic
I discovered errors on page 80, formulas 4.4.37 and 4.4.38, in "Handbook of
Mathematical functions" by Abramowitz & Stegun. It is corrected in the file
below. "NIST Digital Library of Mathematical Functions", avaliable at, is a modern comprehensive reference to mathematical
functions, which does not contain the error. But since Abramowitz & Stegun
is still widely used, if for no other reason than that mathematicians have
learned their way in it, any correction to it needs to be publicly known.

File  Description
AoS080-with-correction-and-comment-v3.jpg  Corrected page 80