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Normal-shaped curve eqns Help watch

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    Is anyone able to help me in finding an equation for an m-shaped graph, with two peaks, a minimum in the middle, and then tending to zero on either side (shaped like 2 normal curves placed next to each other).

    Basically it would look very similar to y = 1/(x+1)^2 + 1/(x-1)^2, but without the asymptotes. It can be done using trig functions and limits, but I need to find a different way.

    Thanks.
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    you can add up two normal curves with means at the two peaks.
 
 
 
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