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Case function in Mathematica 
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#1
Dec2411, 05:38 AM

P: 62

Does anyone familiar with a convenient way in Mathematica to define a case function such as:
[itex] y(x)=\left\{\begin{array}{c} x \\ x\end{array}\begin{array}{c} x>0 \\ x<0\end{array} \right. [/itex] ? Thankes, Omri 


#2
Dec2411, 05:56 AM

P: 2,195

You want to use 'Piecewise':
y[x_]:=Piecewise[{{x,x>0},{x,x<0}}] 


#3
Dec2411, 08:47 AM

P: 62

Thankes,
It's very helpful :) 


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