im stuck on these last two questions can anyone please help find the range of these functions for XER 1) 1 / (x^2 + 2) 2)1 / (x^2 + 4x +5) thanks
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Originally Posted by mike--1988 im stuck on these last two questions can anyone please help find the range of these functions for XER 1) 1 / (x^2 + 2) 2)1 / (x^2 + 4x +5) thanks HI (1) Let since so The other one can be solved using this method too .
i dont quite understand the method here
Originally Posted by mike--1988 i dont quite understand the method here the idea here is to find the range of y which is also the range of the function . When given an equation ,knowing that its roots are real , do you know how to find its discriminant ?
ive looked over it again and i understand it now , thank you
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