HP HP-28S - Page 89

The result matches the previous answer.
Now try algebraic syntax.
c:::J PSUM OJ OJ 2 Q 36 .CD Q OJ 3
Q 651 ENTER I
2: (4.85 53.46)
1: 'PSUM«2,36),~3,65»
I
IIi!lDDlIIm. .. m:IlI_
The outer parentheses and the center comma define the arguments to
PSUM;
the other parentheses and commas are part of complex-num-
ber syntax. Don't forget that you need two sets of parentheses when
using a complex number as an argument in algebraic syntax.
Evaluate
the expression.
IEvALI
3: (4.85,53.46)
2: (4.85,53.46)
1: (4.85,53.46)
IIi!lDDlIIm. .. m:IlI_
88 6: Complex-Number Functions