摘要
方程 y=f(x)与 x=g(y)同解 ,则 y=f(x)与 x=g(y)互为反函数 ,从而可以由求 x=g(y)的定义域 ,得到函数 y=f(x)
If the equations of y=f(x) and x=g(y) have the same solution, they are inverse functions mutually. Then, the variable range of y=f(x) can be obtained by seeking for the definition domain of x=g(x) .
出处
《安徽水利水电职业技术学院学报》
2003年第3期61-63,共3页
Journal of Anhui Technical College of Water Resources and Hydroelectric Power
关键词
函数
反函数
同解变形
function
inverse function
transformation with the same result
