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## Homework Statement

(x,y)-->(0,0) y*ln (y

^{2}+x

^{2})

## Homework Equations

!

## The Attempt at a Solution

i've tried polar coordinates i end up with sinθ in it don't know how to proceed

and i've taken several paths like y=0 , x=0 , x=y

^{2}, x=y , x=y

^{3}

they all yeild zero

Edit : is it right if i after making polar sub. to say that :

r*sinθ * ln r

^{2}[itex]\leq[/itex] r*ln r

^{2}

because if its right then problem solved :P

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