(a) f(2, 1, 2) (b) f(-3, 2, 1) (c) f(0, 0, 0) (e) f(t, 1², –t) (d) f(a, a, a) (f) f(a +b, a – b, b). 10. Let f(x, y, z) = zxy + x. Find (a) f(x+ y, x – y, x²) 11. Find F(f(x), g(y), h(z)) if F(x, y, z) = ye*yz, f (x) = x², 8(y) = y + 1, and h(z) = z². 12. Find g(u(x, y, z), v(x, y, z), w(x, y, z)) if g(x, y, z) = z sin xy,u(x, y, z) = x²z°,v(x, y, z) and w(x, y, z) = xy/z. (b) f(xy, y/x, xz). %3D %3D 2,3 %3D = TXYZ,