交作业
Topic sourcedef quadratic(a,b,c): d=bb-4a*c if a==0: return 'a不能为0' if d<0: return '无解' else: x1=(-b+math.sqrt(d))/2/a x2=(-b-math.sqrt(d))/2/a return x1,x2 为什么我这总返回的是无解?
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def quadratic(a,b,c): d=bb-4a*c if a==0: return 'a不能为0' if d<0: return '无解' else: x1=(-b+math.sqrt(d))/2/a x2=(-b-math.sqrt(d))/2/a return x1,x2 为什么我这总返回的是无解?
一夜听风2011
-- coding: utf-8 --
import math
def quadratic(a, b, c): d=bb-4a*c if a==0: return -c/b if d<0: return 'no!' else: x1=(-b+math.sqrt(d))/2/a x2=(-b-math.sqrt(d))/2/a return x1,x2
print(quadratic(2, 3, 1)) # => (-0.5, -1.0) print(quadratic(1, 3, -4)) # => (1.0, -4.0) print(quadratic(1, 1, 2)) print(quadratic(0, 1, 2)) print(quadratic(1, 2, 1))