from excersice 6 to 10, calculate partial derivatives (fx, fy ,fz)

fx 2 3 4 5 6 7 8 9 10 funcin f(x, y) = yer f(x,y) In(x2 + 4") , y/(x2 + Y2) z) x sin(y z) u = xysin-l(y:) fy fz