How to find the absolute value of a complex function?

Question

I want to find the absolute value of something like 'i' but when I type 'abs(1)' it says 'i' is not defined. What do I do?

*"when I type 'abs(1)' it says 'i' is not defined"* – jonrsharpe Feb 24 '18 at 22:41 — jonrsharpe, Feb 24 '18 at 22:41

Imaad F · Accepted Answer · 2018-02-25T10:00:01.900

1

In python to find the absolute value of a complex function you use j instead of i.

abs(a+bj) # General Format
abs(0+1j)
>> 1

Or you could define i as the square root of -1 and use it instead

i = (-1) ** 0.5
abs(i)
>> 1

edited Feb 25 '18 at 10:00

answered Feb 24 '18 at 22:39

Imaad F

@BennnHBennnH also FYI https://stackoverflow.com/help/someone-answers – jonrsharpe Feb 24 '18 at 22:42
@imaad, your second example should be `(-1)**0.5`, right now you're doing `-(1**0.5)` as can be seen checking the value of `i` itself rather than `abs(i)`, (it gives `-1` rather than `1j`) – Nick stands with Ukraine Feb 25 '18 at 05:35

1 Answers1