python第一次作业

lxw20230271162026-01-21 8:27

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python 复制代码

#1+1/2+1/3+.....+1/100
sum = 0
for i in range(1,101):
    sum += 1/i
print(sum)

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python 复制代码

#1-1/2+1/3-1/4+....1/n
sum =1
f = -1
for i in range(2,101):
    sum = sum + 1/i*f
    f = -f
print(sum)

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python 复制代码

#1+1/(1+2)+1/(1+2+3)+1/(1+2+3+4)+...+1/(1+2+3+...+n)
sum = 0
t = 0
for i in range(1, 101):
    t += i
    sum += 1 / t
print(sum)

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#a+aa+aaa+.....前6项之和（a=2）
a = 2
sum = 0
for i in range(1,7):
    sum += a*(10**(i-1))
print(sum)

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python 复制代码

#e=1+1/1!+1/2!+1/3!+1/4!+1/5!+...+1/n!
sum = 1
t =1
i =1
while 1/t> 1e-6:
    t = t*i
    sum = sum + 1/t
    i = i+1
print(sum)

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python 复制代码

#Π/4=1-1/3+1/5-1/7+1/9-1/11+...
import math
n=0
sum=0
for i in range(1,1000000):
    n+=1
    sum+=(-1)**(i+1)/(2*i-1)
print(sum*4)
print(math.pi)

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