Find the total differential of the function z = y³x³ + 15y + 14. dz = Now calculate Az and dz for x = -2, y = 4, and f(-2.01, 3.97). Enter Az and dz without rounding off. Also show the work requested below. Az = f( ) − ƒ( ) ≈ [ dx = dz = fz( and dy = ) dx + fy( SO )dy =

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