By about how much will g(x,y,z) = 3x + x cos z -y sin z + y change if the point P(x,y,z) moves from Po (3, - 3,0) a distance of ds = 0.2 unit toward the point P, (1, - 1,2)? .. . -6 dg ~ 75 (Type an integer or decimal rounded to four decimal places as needed.)