Question

Positive root of the following equation:
34*x^2 + 68*x - 510
Recall:
a*x^2 + b*x + c
x1 = ( - b + sqrt ( b*b - 4*a*c ) ) / ( 2*a )

Can anyone help to type this into the IDLE, so that i can find the root?

Answer 1

I did it pretty obvious way:
import math
a=34
b=68
c=-510
x=(-b+math.sqrt(b*b-4*a*c))/(2*a)
print x

Answer 2

thanks a lot, but i copy and paste the instruction it said invalid syntax, can you teach me how to do that maths through the python?

Answer 3

I am sorry, but I'm just a beginner myself, this was the first thing I did with Python using instructions from the page http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-00sc-introduction-to-computer-science-and-programming-spring-2011/software/ and I posted it here because my code returns the correct answer to me. Maybe you have another version of Python. Sorry, I can't explain much at the moment as you see.

Answer 4

hey @sulphuratom it would be better if you paste your code and the error using any of the websites(eg www.pastebin.com , dpaste.com etc)
it will help understand your problem better