Your second component function should be: 7x-3y-5z
See attachment
Note this wouldn't affect the divergence as you are differentiating wrt y anyway
so we had a substitute professor today who did not even get to teach us curl and divergence..he simply reviewed old stuff with us.. now i'm trying to teach myself to get this homework done.
E= (4x+y, 7x-3y-5x, 8x)
i got the right answer for the divergence (1)
but i cannot figure out how to get the right answer for the curl (5, -8, 6)
any help starting off would be great, thanks