SOLUTION: i need help finding the range of: y=(x^2+x-2)/(x^2-3x-4)

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Question 915500: i need help finding the range of: y=(x^2+x-2)/(x^2-3x-4)
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
y=%28%28x-1%29%28x%2B2%29%29%2F%28%28x%2B1%29%28x-4%29%29

Check NEAR the four critical values of x, to the left and to the right of each critical value. The critical values are -2, -1, 1, and 4.

I can only imagine using derivative of y to help find the minimum or maximum value(s). Quotient Rule using y in its non-factored form. The easier way is to use a graphing calculator and find the numeric values for any max or min.

I used the easy way, entering the equation into www.google.com.
Range is all real numbers. No maximum and no minimum.