The complementary parameter 
associated with an elliptic
parameter 
is
 |
If 
, where 
is the elliptic modulus,
then 
, where 
is the complementary
modulus. Thus the complementary parameter is the square of the complementary
modulus, rather than the complementary modulus
itself (Abramowitz and Stegun 1972, p. 590). The prime denotes complementation,
not a derivative. Abramowitz and Stegun use 
for the complementary parameter.
