Oct-27-2017, 03:56 PM
hi, i did a python program to solve a 2nd degree equation:
equation = input('write the equation : ')
#Write the equation : 4x^2 + 4x + 7 = 0
and then find the discriminant of the equation written in the input.
Another way would maybe be to write the equation as argument ?
and so i would run my python like:
python mypython.py "equation"
what would be the easiest way to do it ?
from math import * a = input('a = ') b = input('b = ') c = input('c = ') print 'The equation is : {}x^2 + {}x + {} = 0 '.format(a, b, c) delta = b*b-4*a*c if delta > 0: print 'Discriminant = {}, two solutions:'.format(delta) r=sqrt(delta) t = -b - r t2 = -b + r s1 = t / (2*a) s2 = t2 / (2*a) print s1 print s2 elif delta == 0: print 'Discriminant = 0 : one solution : ' s = -b/(2*a) print s else: print "Discriminant = {} : no solutions".format(delta)so the output if a=4, b= 8, c=8 (delta=0) would be :
Output:The equation is : 4x^2 + 8x + 4 = 0
Discriminant = 0 : one solution :
-1
or if a=4, b=8, c=14 (delta<0):Output:The equation is : 4x^2 + 8x + 14 = 0
Discriminant = -160 : no solutions
or if a=4, b=16, c=8 (delta>0):Output:The equation is : 4x^2 + 16x + 8 = 0
Discriminant = 128, two solutions:
-3.41421356237
-0.585786437627
But what i would like to do is to write the whole equation in only one input like:equation = input('write the equation : ')
#Write the equation : 4x^2 + 4x + 7 = 0
and then find the discriminant of the equation written in the input.
Another way would maybe be to write the equation as argument ?
and so i would run my python like:
python mypython.py "equation"
what would be the easiest way to do it ?