WP 34s Complex operation

04102014, 09:05 PM
Post: #1




WP 34s Complex operation
Out of curiosity, I was wondering why the 34s requires typing in the imaginary portion of the complex number 1st. (Now that I have that down, I'm used to it, and I'm not getting confused.) I like the simultaneous view of the real part and the imaginary part now offered!
I like the HP 15C's methodology...it is simpler, and I don't have to worry about going in and out of complex mode while working with complex numbers. On the 34s, simple operations such as raising a complex number to a real power, or multiplying by a real number requires typing in both the imaginary part (which would be zero) and then the real part before tapping the complex key and performing the operation. In any case, the WP 34s is quite a shirt pocket tool! 

04102014, 09:38 PM
Post: #2




RE: WP 34s Complex operation
I imagine because the imaginary (heh) part has to be in register Y.
So typing it first, then the real part, puts Re onto level X and Im onto level Y. The order of input seems reverse, but is in line with the RPN logic i guess. 

04112014, 12:21 AM
Post: #3




RE: WP 34s Complex operation
(04102014 09:05 PM)lrdheat Wrote: Out of curiosity, I was wondering why the 34s requires typing in the imaginary portion of the complex number 1st.You can do it similar to the HP15C. Just use the [x<>y] key instead of [I]. It might help that J is written below that key. Here's how to enter \(2+7i\): HP15C: 2 [ENTER] 7 [f] [I] WP34s: 2 [ENTER] 7 [x<>y] Just counting the key strokes you need even less. But I agree that handling complex numbers is cumbersome with the WP34S. HTH Thomas 

04112014, 05:09 AM
Post: #4




RE: WP 34s Complex operation
(04112014 12:21 AM)Thomas Klemm Wrote: Here's how to enter \(2+7i\): Simply nice! Quote:But I agree that handling complex numbers is cumbersome with the WP34S. That's all we could (and can) do without data types  which aren't viable for space reasons on the HP30b HW. Sorry for that. It will become easier and better with the 43S. d:) 

04112014, 06:32 AM
Post: #5




RE: WP 34s Complex operation
You may also read this
http://www.hpmuseum.org/forum/thread938.html 

04112014, 06:37 AM
Post: #6




RE: WP 34s Complex operation
You could always take the 34S source code and implement the 15C complex handling instead of what we provided. It would be a long hard path.
Personally, I'd follow Thomas's suggestion and use x<>y instead of I.  Pauli 

04112014, 07:16 AM
Post: #7




RE: WP 34s Complex operation  
04112014, 04:59 PM
Post: #8




RE: WP 34s Complex operation
(04112014 07:16 AM)walter b Wrote:ha ha ha come on Walter(04102014 09:05 PM)lrdheat Wrote: Out of curiosity, I was wondering why the 34s requires typing in the imaginary portion of the complex number 1st. 

04112014, 06:12 PM
Post: #9




RE: WP 34s Complex operation
Thanks...I was just observing that HP 15 methodology allowed for a complex number to be operated on by a real number vs the 34s requirement of entering the zero i component, then the real component, declare it complex, and then perform the operation...say (3i4)*4...I would have to enter 0, then 4 then hit complex multiply.
I understand now that this was the best way to accomplish complex capability on the 34s, and I'm happy the capability is there regardless. Just took me a bit to get used to how to work it! 

04112014, 06:19 PM
Post: #10




RE: WP 34s Complex operation  
04122014, 01:37 AM
Post: #11




RE: WP 34s Complex operation  
04122014, 09:49 AM
Post: #12




RE: WP 34s Complex operation
(04112014 06:19 PM)walter b Wrote:So you were serious? How would you explain that when you need to calculate on 2 complex numbers the other one would be z+it?(04112014 04:59 PM)Tugdual Wrote: ha ha ha come on Walter I really thought it was humor, sorry, no offense. 

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