1.

If f (x,y) =3x ^(2) + 2xy where x = r + 2s ^(2), y = r ^(2) -s find (delf)/(delr), (drl f)/(dels).

Answer»


ANSWER :`=24 rs + 48s^(2) + 8R ^(2) s-8s^(2)-2R^(2) +2s`


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