2.2.65 Derivatives and Differentials
Condition: Find private derivatives of the first and second orders from a complex function: \ [u = f (\ XI, \ ETA), \ Quad \ XI = 2 X+Y^{3}, \ Quad \ ETA = X-2 \ FRAC {Y} {X} \]]
Calculation of derivatives and differentials of first and Higher Orders of Function of One and Many Varia Bybles, Including Partial Derivatives.