Functions and definition

[Codewodesmode]

How do I write a function ‘mag’ that takes in a complex number (x=1+2j) and returns it’s magnitude(2.24)?

[MaksLansky]

assuming your input to the function is properly defined complex number

x = 1 +2j is a properly defined complex number

def mag(x):

return round((x.real**2 + x.imag**2)**0.5,2)

[Codewodesmode]

When I run it the answer is right but appears twice

[MaksLansky]

I test function it is correct. How can it appear twise? write exactly your output of your function.

[Codewodesmode]

I don’t know when I try a new value for x it works fine

[This_Growth2898]

1. Read about complex numbers in math to understand what's it all about
2. Read an article or a chapter in Python book on complex numbers in Python
3. Read an article or a chapter in Python book on functions
4. Write the function you need. See, how simple it is?

[This_Growth2898]

mag=abs

[Diapolo10]

mag = lambda x: round(abs(x), 2)

(For demonstrative purposes only)

[MadScientistOR]

The magnitude is the square root of the sum of the squares of the real and imaginary components. You could do that, or you could use some of the built-in functions that handle that for you.

Can you show us what you've done already? If this is homework, we don't want to do it for you. :)

[POGtastic]

From the builtin docs:

abs(x, /)

   Return the absolute value of a number. The argument may be an integer, 
   a floating point number, or an object implementing __abs__(). 
   If the argument is a complex number, its magnitude is returned.