HP Prime Graphing Calculator - Manual (Page 314)

310 Functions and commands
Sn Reciprocal.
value -1
Example:
3
-1 returns .333333333333
Q- Negation. Also accepts complex numbers.
-value
Example:
-(1+2*i) returns -1-2*i
SQ (|x|) Absolute value.
|value|
|x+y*i|
|matrix|
For a complex number, |x+y*i| returns . For a
matrix, |matrix| returns the Frobenius norm of the matrix.
Example:
|–1| returns 1
|(1,2)|returns 2.2360679775
Math menu
Press D to open the
Toolbox menus (one of which
is the Math menu). The
functions and commands
available on the Math menu
are listed as they are
categorized on the menu.
x 2 y 2 +