- #1

- 4

- 0

## Main Question or Discussion Point

Here is the problem:

Given that electric potential is given as a function of x and y: V(x,y)=20x

What is E

I have tried using E=-DV/DV, but I keep getting confused on how to derive this as it's been a while since I took calculus. I am also unsure of how to plug in the number, like if I only derive the x component and only plug the x into it, or if the y component is involved.

Given that electric potential is given as a function of x and y: V(x,y)=20x

^{4}+ 60y^{3}What is E

_{x}at (2,1)?I have tried using E=-DV/DV, but I keep getting confused on how to derive this as it's been a while since I took calculus. I am also unsure of how to plug in the number, like if I only derive the x component and only plug the x into it, or if the y component is involved.