Find the gradient of the function f(x,y)=(x+2)(y−3)f(x,y) = (x+2)(y-3)f(x,y)=(x+2)(y−3) at the point (1,4)(1, 4)(1,4).
⟨1,3⟩\langle 1, 3 \rangle⟨1,3⟩
⟨3,1⟩\langle 3, 1 \rangle⟨3,1⟩
⟨−3,2⟩\langle -3, 2 \rangle⟨−3,2⟩
⟨4,1⟩\langle 4, 1 \rangle⟨4,1⟩