HP HP-28S - Page 84

Add -4 + 3i. (Remember to press [IJ ~ to enter -4.)
CO -4 [J 3 [!] 3:
2:
Multiply by 6 + l.
C06[J10
1: (5,5)
m:JIm. .. m:JlI __
3:
2:
1: (25,35)
m:JIm. .. m:JlI __
Sometimes a real-number argument can produce a complex-number
result.
Calculate
VC"4.
-4.ffiJ
Calculate arcsin 2.
2 1 TRIG I ASIN
3:
2: (25~35)
1: (~,2)
m:JIm. .. m:JlI __
I~ (1.57079632679~ (~,2)
-1.31695789692)
~r:m:JI:mIII:ImIIECIIIlillCI
Functions specifically for complex numbers are in the COMPLEX
menu.
Select the COMPLEX menu .
• 1 COMPLX I
I~ (1.57079632679~ (0,2)
-1.31695789692)
DDlaa"~m:D1iE3
All commands in the COMPLEX menu are described briefly in appen-
dix D, "Menu Map." For complete descriptions, refer to "COMPLEX"
in
the Reference Manual.
•
R-C (real-to-complex) converts two real numbers x and y to one
complex number (x, y).
• C - R (complex-to-real) converts one complex number (x, y) to two
real
numbers x and y.
• RE (real part) returns x for a complex argument (x, y).
6: Complex-Number Functions 83