8. Additional Computational Practice: Compute the (first-order) partial derivatives of each of the following functions. (Parts h), i), and j) will require three partials!) = + + ab a b a) f(x, y) = (3x - y)5 4u f) f(u, v) u+v2 b) f(x, y) = e*sin(y) 1 1 1 g) g(a,b) a b c) h(u,v) = u cos(u + v) d) g(s,t) = tes + s + t + e) f(u,v) = u + v + tan(2uv v) h) h(x,y,z)=x - 2y + 3z i) f(x, y, z) = z sin(2xy) j) g(u,v, w) = ln() + u+5v2 W