import math
def quadratic_equation(a, b, c):
delta = math.sqrt(b*b-4*a*c)
if delta < 0 or a == 0 :
return
else :
x1 = (delta-b)/(2*a)
x2 = (-delta-b)/(2*a)
return x1,x2
print quadratic_equation(2, 3, 0)
print quadratic_equation(1, -6, 5)
def quadratic_equation(a, b, c):
delta = math.sqrt(b*b-4*a*c)
if delta < 0 or a == 0 :
return
else :
x1 = (delta-b)/(2*a)
x2 = (-delta-b)/(2*a)
return x1,x2
print quadratic_equation(2, 3, 0)
print quadratic_equation(1, -6, 5)
2016-06-20
def square_of_sum(L):
sum=0;
for x in L:
sum+=x*x
return sum
print square_of_sum([1, 2, 3, 4, 5])
print square_of_sum([-5, 0, 5, 15, 25])
sum=0;
for x in L:
sum+=x*x
return sum
print square_of_sum([1, 2, 3, 4, 5])
print square_of_sum([-5, 0, 5, 15, 25])
2016-06-20
s = set([('Adam', 95), ('Lisa', 85), ('Bart', 59)])
for x in s:
print x[0],":",x[1]
for x in s:
print x[0],":",x[1]
2016-06-20
print(45678 + 0x12fd2)
print('Learn Python in imooc')
print(100<99)
print(0xff == 255)
print('Learn Python in imooc')
print(100<99)
print(0xff == 255)
2016-06-19
print 45678+0x12fd2
print'Learn Python in imooc'
print 100<99
print 0xff==255
print'Learn Python in imooc'
print 100<99
print 0xff==255
2016-06-19