HP 33S - Page 133

Operations with Complex Numbers
9–3
File name 33s-E-Manual-1008-Publication(1st).doc Page : 386
Printed Date : 2003/10/8 Size : 13.7 x 21.2 cm
Functions for One Complex Number, z
To Calculate: Press:
Change sign, –z
¹ c z
Inverse, 1/z
¹ c ,
Natural log, ln z
¹ c &
Natural antilog, e
z
¹ c #
Sin z
¹ c k
Cos z
¹ c n
Tan z
¹ c q
To do an arithmetic operation with two complex numbers:
1. Enter the first complex number, z
1
(composed of x
1
+ i y
1
), by keying in y
1
Ï
x
1
Ï
. (For
2
1
z
z
, key in the base part, z
1
, first.)
2. Enter the second complex number, z
2
, by keying in y
2
Ï
x
2
. (For
2
1
z
z
,
key in the exponent, z
2
, second.)
3. Select the arithmetic operation:
Arithmetic With Two Complex Numbers, z
1
and z
2
To Calculate: Press:
Addition, z
1
+ z
2
¹ c Ù
Subtraction, z
1
– z
2
¹ c Ã
Multiplication, z
1
×
z
2
¹ c ¸
Division, z
1
÷
z
2
¹ c ¯
Power function,
2
1
z
z
¹ c )
Examples:
Here are some examples of trigonometry and arithmetic with complex numbers:
Evaluate sin (2 + i 3)
Keys: Display: Description:
3
Ï
2

Result is 9.1545 – i
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