Q1/Solve of the following: A. If f (u,v,w) is a function and u-x-y, v=y-z and wz-x. Prove that C. If w=f(x,y) and x=r. cose, y = r.sine. Prove that af dx af af B. If f (x,y,z)=x+2y+z² and x=y=r² + Ins, z=2r. Find and ər əs aw ar 1 (dw de ar ar dy dz = fx + fy

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