ok... so i'm taking calc3, and didnt go to class for a month, lol(adsbygoogle = window.adsbygoogle || []).push({});

now i can't solve this (what seems like) a simple limit... please help

lim

(x,y,z) -> (0,0,0)

of this

xy + yz + zx

-----------------

(x^2)+(y^2)+(z^2)

i tried doing the limit as (x,y,z) approaches (x,0,0) (0,y,0) and (0,0,z) and got zero, but that's not the answer

however when i put it into my calc and grind it out i get 1... but how can i do it on paper?

thankyou very much in advance

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# Relatively easy limit help please

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