Archived:How to solve a quadratic equation with PySymbian

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Created: Rafael T. (23 Oct 2008)

Last edited: lpvalente (05 May 2013)

This example shows how to solve quadratic equations using PySymbian.

Example Code

#Equations.py
#(c) Rafael Tavares 2008
import appuifw
from math import sqrt
 
op = 1
 
#Calculate
while (op!=2):
 
     a = float(appuifw.query(u"A:", "text"))
     b = float(appuifw.query(u"B:", "text"))
     c = float(appuifw.query(u"C:", "text"))
 
#Delta
 
     delta=b*b-4*a*c
 
#The equation answer is not a real number
     if (delta<0):
 
          appuifw.note(u"Equation answers are not real numbers", "error")
 
#The equation is possible
     else:
 
         x1=((b*-1)+sqrt(delta))/(2*a)
         x2=((b*-1)-sqrt(delta))/(2*a)
 
     continueoption=appuifw.popup_menu([u"Delta= "+u"%.0f" % (delta), u"x'= "+u"%.1f" % (x1), u"x''= "+u"%.1f" % (x2), u"Quit"])
 
     if (continueoption==3): # Quit selected
 
          op = 2

This article was written by Rafael T.