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LIR - Beaker - hope this helps -- (edited)

y = 1 / (X^2 + 2)

when x passes -+ 1 toward 0 it is a decimal which becomes a smaller decimal when squared
so, y will get bigger
relatively, since y will never get larger than 1/2

when x passes +- 1 toward infinity the square of that number becomes much larger
thus, y gets much smaller
y starts approaching 0


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