# Multivariate piecewise function?

Hi,

How can I define a function like this?

`f(x,y) = x*y`

, when (x > 0),(y>0)

`f(x,y) = -x*y`

, when (x <= 0), (y <=0)

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Multivariate piecewise function?

Hi,

How can I define a function like this?

`f(x,y) = x*y`

, when (x > 0),(y>0)

`f(x,y) = -x*y`

, when (x <= 0), (y <=0)

add a comment

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Asked: ** 2013-08-23 11:36:21 +0200 **

Seen: **196 times**

Last updated: **Aug 23 '13**

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