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sha0403
how to know the which one equation is one to one function and many to one function? can anyone explain to me?
You have probably used the vertical line test to determine if a given relation is a function. Use the similar "horizontal line test" to test a function to see if it is one-to-one. If any horizontal line cuts the function at zero or one point, the function is one-to-one. For example, y=2x is a one-to-one function, while \( y=x^2 \) is not .
ok..i understand.. if many to one equation?
this link will help you http://mathonweb.com/help_ebook/html/functions_6.htm