# 0221
## 一、import 匯入 math 數學工具箱
>import math
print(math.cos(30))
>import math
print(math.floor(4.5))
print(math.log(3))
> x = min(5, 10, 25, 60, 70)
y = max(5, 10, 25, 90)
print(x)
print(y)
#把5,10,25,60,70當作參數傳入min這個函數中
運算出來的解果 設定給y 結果傳入print 然後印出來
>絕對值
>x= abs(7)
print(x)
>次方
x = pow(4, 3)
print(x)
>開根號
import math
a=(math.sqrt(7)- math.sqrt(5))/(math.sqrt(7)+ math.sqrt(5))
b=math.pow
print(a)
## 二、上課筆記
>#Import math library
#匯入math模組
import math
#Round a number upward to its nearest integer
#把1.4當作參數,傳入到math.ceil()函數中
x = math.ceil(1.4)
#Round a number downward to its nearest integer
#把1.4當作參數,傳入到math.floor()函數中
y = math.floor(1.4)
print(x)
print(y)
>天花板(範圍最高)整數 地板(範圍最低)整數
import math
x = math.sqrt(64)
print(x)
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