Hello, I can't seem to get this question ( 1 part b). Can please help me solve it and understand what I am doing wrong. Please show your steps and explain.

(50%) Problem 1: The electric field in a certain region is given by the function: E = Akcos(kx)cos(by)i - Absin(kx)sin(by)j (0,VI) where A = 7 Nom/C, k = 0.55 m", and b = 1.4 m. The points in the figure are given by values x] = 1.75 m and y1 = 2.5 m. (0,0) (x, 0) Otheexpertta.com 17% Part (a) What is the change in electric potential, in volts, from point (0, 0) to point (x1. 0)? V(x1. 0) - 1(0, 0) = - 5.9 V(x]. 0) - V(0, 0) = -5.900 Correct! * 17% Part (b) What is the change in potential, in volts, from point (x1: 0) to point (x1: )1)? Grade Summary V(x1: y1) - V(x1: 0) = - 30.63 Deductions 4% Potential 96%