Hi, I need to find the square root of a number in a program I am writing. I have imported the 'math' module so I thought I could just call sqrt(x) but I get an error message. Extact from my code and error message below.
import sys, pygame, math ... if ypos >= 384 and velocity > 0: impactvel = sqrt(velocity ** 2 + (2 * gravity * (ypos - 384 * 160))) ... Traceback (most recent call last): File "<stdin>", line 32, in <module> ValueError: math domain error This one has me stumped as the usage of the module looks straight forward from the documentation. Thanks for looking. Matt _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor