What isnt my python code running?

Question

my code is giving me some errors Traceback (most recent call last): File "python", line 7, in ValueError: math domain error

  import math
  a= 3
  b= 5
  c= 2
  d= b^2 -4*a*c
  x1 = math.sqrt(d)
  print(x1)

`^` is bitwise xor, you want to use `**` for exponentiation. — Abhijith Asokan, Nov 18 '17 at 13:40
Possible duplicate of [ValueError: math domain error](https://stackoverflow.com/questions/15890503/valueerror-math-domain-error) — Aran-Fey, Nov 18 '17 at 13:40
So you're aware - "why isn't this code working?" is a defined "close" vote option on stack overflow in itself (people can vote to close a question so that it can't be answered unless the question is edited to meet the site guidelines). Your title is not helpful for others that might encounter the same problem. — roganjosh, Nov 18 '17 at 13:45

score 0 · Answer 1 · answered Nov 18 '17 at 13:39

0

Your d is -17 (You most probably wanted to use ** instead of ^)

What is the root of a negative number?

That is what the exception is saying

answered Nov 18 '17 at 13:39

Nabin

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score 0 · Accepted Answer · answered Nov 18 '17 at 13:40

d is negative when there are no real solutions, therefore its square roor is also not real:
Please also note that b^2 is not bsquared, it is b xor 2. for b square, use b**2, or b*b

import math

a = 3
b = 5
c = 2

d = b**2 - 4*a*c      # Attention, b^2 is not b square, use b**2
if d > 0:
    x1 = math.sqrt(d)
    print(x1)
else:
print("there are no real roots")

What isnt my python code running?

2 Answers2