Posts: 109

Threads: 38

Joined: Dec 2012

I can't get the hang of working complex # problems on the 34S. The 15C manual has a problem that is intuitive on that platform and on the 35S, but not for me on the 34S:

2i(-8+6i)^3/(4-2sqrt5i)*(2-4sqrt5i)

The answer is ~ 9.3982-35.1344i

Thanks for any help!

Posts: 2,761

Threads: 100

Joined: Jul 2005

Assuming you mean

2i(-8+6i)^3/((4-2sqrt(5)i)*(2-4sqrt(5)i))

and stack size is set to 8,

SSIZE8

then a possible keystroke sequence is

2 ENTER 0 ENTER 6 ENTER 8 +/- ENTER 0 ENTER 3 CPX y^x CPX *

5 SQRT 2 +/- * 4 ENTER 5 SQRT 4 +/- * 2 CPX * CPX /

This returns

--> 9.39820200952

x<>y --> -35.1343865997

HTH

*Edited: 17 Feb 2013, 6:57 p.m. *

Posts: 109

Threads: 38

Joined: Dec 2012

Thanks! I think that I can get comfortable with this.