Question

Can't figure Exercise OPT.2 #3: "write a list comprehension that finds the integer solutions [x, y] for a circle of radius 5. Don't we need to know where the center is? Even if I assume it's 0 my feeble brain finds it insanely complicated to find both positive and negative values for x and y as well as limiting it to integers. I feel like I'm making a simple problem too complicated. Can anyone help?

Answer 1

well, perhaps you are - knowing the center would be good, and assuming (0,0) seems like a good idea. but all you need is x**2 + y**2 == 25
for x,y in range(-5,6) rather than range(6) - the positive solutions...

Answer 2

Thanks so much. Of course, that works perfectly. I was ridiculously trying to produce x and y values with plus or minus square root of x**2 - 25. I appreciate your incisiveness.