Hi, guys,
As shown in the photo,
What's the differences between i and 1i?
Is it possible to use an operator or a function to find the magnitude (or angle) of a symbolic complex function?
Hope you could help me.
May the force be with you guys.
Shawn
1 ACCEPTED SOLUTION
Accepted Solutions
Addendum: My previous response was via my phone. I'm now back at my PC, so can attach an annotated copy of your original Prime file.
I've checked my copy of the ISO 80000-2 and the Prime x + 1i.y notation appears to be a deviation from the standard. As Mathcad 15 shows the correct form, I regard the Prime form as a bug.
M15:
Stuart
Addendum: My previous response was via my phone. I'm now back at my PC, so can attach an annotated copy of your original Prime file.
I've checked my copy of the ISO 80000-2 and the Prime x + 1i.y notation appears to be a deviation from the standard. As Mathcad 15 shows the correct form, I regard the Prime form as a bug.
M15:
Stuart
Shawn Fan wrote:
Yep, you got me through this problem.
No worries. 
You are so sophisticate, I hope I could be like you one day.
Whilst I appreciate the thought (), I don't think anybody in a sober state of mind would entertain either the notion of me being sophisticated or the wish to be like me (even for one day!). Ask my wife! 
Shawn Fan wrote:
Force is with you.
By sheer coincidence, I've just had a blood test and my midi-chlorian count is -i. 
I'm the kind of person who, if I were a Drazi, would pick a yellow scarf out of the bin. 
Stuart
Mathcad has always required you to input an imaginary number using "1i" or "1j" --the two keystrokes with nothing between them. Typing "1*I" will get you either an error (if you haven't declared a variable "I", or simply your already defined variable.
Before Prime, after you typed "3+4*1i", you would see displayed "3+4i", the superfluous "1" would disappear. As Stuart has said, Prime will display it as typed.
One could argue that this avoids the confusion of what's imaginary and what's not. 
(Note that with the cursor in the expression the "1i" is still there in version 15.
For a version that claims to be more "presentation friendly," one might expect closer adherence to standard terminology.
Oh well!
its files are always much smaller than 15's,
Go to Tools, Preferences, and the Save tab. Change the type of file to Mathcad Compressed XML Document. Problem solved 
Fred Kohlhepp wrote:
Mathcad has always required you to input an imaginary number using "1i" or "1j" --the two keystrokes with nothing between them. Typing "1*I" will get you either an error (if you haven't declared a variable "I", or simply your already defined variable.
Before Prime, after you typed "3+4*1i", you would see displayed "3+4i", the superfluous "1" would disappear. As Stuart has said, Prime will display it as typed.
One could argue that this avoids the confusion of what's imaginary and what's not.
(Note that with the cursor in the expression the "1i" is still there in version 15.
For a version that claims to be more "presentation friendly," one might expect closer adherence to standard terminology.
Oh well!
Indeed, one could argue that it is less ambiguous, but I'm willing to take bets that somebody, somewhere, sometime is going to get confused about even this:
Furthermore, Prime treats constants differently to variables display-wise (at least, by default). In this it does follow the ISO 80000 standard and express constants in upright font and variables in italic font, so the case for the ugly 1i construct is weaker than for M15.
Plus there's always colour distinction, as found in many "smart" programmers' text editors, which is quite a bit easier in M15 (well, at least it is to me; I haven't managed to get the numbers to change colour)
or go more of the Prime (and ISO 80000 route by italicizing the Variable Math Style (although it doesn't distinguish the keywords as well as Prime does).
Stuart
