Black mantis
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- Mar 25, 2020
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Find the range of the expression x-2/x^2 + x + 3 where x is real.
Sol: f(x)= x-2/ x^2 + x + 3 = y
x^2 y + xy + 3y = x -2
Sol: f(x)= x-2/ x^2 + x + 3 = y
x^2 y + xy + 3y = x -2
Hi Black mantis. Here's a quick note about terminology. The given function is not quadratic; it's rational. You're finding the range of a rational function.Range of quadratic equation …