Why doesn't this work?.... $\displaystyle f^{-1}(x)= \left \{ \begin{array}{ll} x & \text{if x $\ge$ 0} \\ -x & \text{if x $<$ 0}\end{array} \right$ (quote me)
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Originally Posted by Greengoblin Why doesn't this work?.... $\displaystyle f^{-1}(x)= \left \{ \begin{array}{ll} x & \text{if x $\ge$ 0} \\ -x & \text{if x $<$ 0}\end{array} \right.$ (quote me) You need this: [tex]f^{-1}(x)= \left \{ \begin{array}{ll} x & \text{if x $\ge$ 0} \\ -x & \text{if x $<$ 0}\end{array} \right.[/tex] The period makes all the difference. --Chris
thanks
Last edited by ThePerfectHacker; Oct 8th 2008 at 12:46 PM.
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