hey
consultation on this question
$$f(x,y)=\frac{xyz}{x+y+z}$$ domain is all (x,y,z) except (0,0,0)
or I should say all points that lie on the plane x+y+z=0 are not part of the domain.

Question

hey 
consultation on this question
$$f(x,y)=\frac{xyz}{x+y+z}$$ domain is all (x,y,z) except (0,0,0)
or I should say all points that lie on the plane x+y+z=0 are not part of the domain.

parthkohli · Answer

but wait

parthkohli · Answer

the second one is a lot more appropriate because (0,0,0) is not the only point lying on x + y + z = 0, is it?

xapproachesinfinity · Answer

oh i thought so, i had this on the exam
i wrote first hand x+y+z different than zero
then somehow i changed it to (0.0,0) lost 4 points for nothing haha

parthkohli · Answer

oh that is bad

xapproachesinfinity · Answer

sometimes i feel really stupid

xapproachesinfinity · Answer

thanks for confirmation, i got a 96! 100 gone in smoke

parthkohli · Answer

wow close enough!

parthkohli · Answer

you'll get a perfect score the next time, I promise. don't worry about this one.

xapproachesinfinity · Answer

exam was pretty dull, easy enough to score 100.

xapproachesinfinity · Answer

nah i always make fatal errors my average 97, 98