If Ø(x, y, z) = x² - y²-2²-2, then ∇Ø at (2,1,-1) is ,,,choose the correct answer?
A) 4i +2j-2k
C) 4i + 2j + 2k
D)4i - 2j +2k
By definition, or, equivalently,
Now, just plug in the found partial derivatives to get the curl:
Finally, find the curl at the specific point.
The answer should be 4i - 6j+2k