Use the fact that \\bF = (2xy - 4cosy) \\bi+ (x + 4xsiny) \\bj, is a gradient vector field to evaluate the line integral 1 = F . dubs along a smooth curve C in the plane from NIN P = (1, x) to Q= 2, 1. I =1+4 2. I =1-47 3. I = 27 + 4 4. 1 =1-4 5. 1 = 2+4x 6. 1 = 2-4T