def quadratic(a,b,c):
if not isinstance(a,(int,float)):
raise TypeError('Bad operand type')
if not isinstance(b,(int,float)):
raise TypeError('Bad operand type')
if not isinstance(c,(int,float)):
raise TypeError('Bad operand type')
delta=bb-4ac
if delta<0:
return
x1=(-b+math.sqrt(delta))/(2a)
x2=(-b-math.sqrt(delta))/(2*a)
if delta==0:
return x1
if delta>0:
return x1,x2
a=float(input('Please input the a:'))
b=float(input('Please input the b:'))
c=float(input('Please input the c:'))
print(quadratic(a,b,c))
特种的部队
定义一个函数，接收三个参数，返回一元二次方程
ax^2+bx+c=0的两个解
import math
def quadratic(a,b,c): if not isinstance(a,(int,float)): raise TypeError('Bad operand type') if not isinstance(b,(int,float)): raise TypeError('Bad operand type') if not isinstance(c,(int,float)): raise TypeError('Bad operand type') delta=bb-4ac if delta<0: return x1=(-b+math.sqrt(delta))/(2a) x2=(-b-math.sqrt(delta))/(2*a) if delta==0: return x1 if delta>0: return x1,x2
a=float(input('Please input the a:')) b=float(input('Please input the b:')) c=float(input('Please input the c:')) print(quadratic(a,b,c))