What is the inverse of f(x)= 2-x/5x?
回答 (2)
2015-10-06 8:50 pm
Let y = (2 - x) / (5x)
5xy = 2 - x
5xy + x = 2
x(5y + 1) = 2
x = 2 / (5y + 1)
The inverse function is 2 / (5x + 1)
5xy = 2 - x
5xy + x = 2
x(5y + 1) = 2
x = 2 / (5y + 1)
The inverse function is 2 / (5x + 1)
2015-10-06 8:56 pm
y=(2-x)/5x
5xy=2-x
x+5xy=2
x(1+5y)=2
x=2/(1+5y)
5xy=2-x
x+5xy=2
x(1+5y)=2
x=2/(1+5y)
收錄日期: 2021-04-21 14:33:34
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20151006124730AAypNno