Hi Swagata,

It is given that, V = 6xy − y + 2yz

E = [ (∂V/∂x) i + (∂V/∂y) j + (∂V/∂z) k]

E = − { (∂/∂x) [6xy − y + 2yz] i + (∂/∂y) [6xy − y + 2yz] j + (∂/dz) [6xy − y + 2yz) k}

= − { (6y) i + (6x − 1 + 2z) j + (2y) k}

E(1,1,0) = −{ (6x1) i + (6 × 1 − 1 + 2 × 0) j + (2 × 1) k]

=− (6i + 5j + 2k)

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!