600 yards of fencing material are available to fence in two adjacent rectangular corrals sharing a common fence. find the dimensions of the corrals that will enclose a maximum area

Find parametric equations for the line tangent to the curve of intersection of the surfaces at the given point. surfaces: xsquared2plus+2yplus+2zequals=1212 yequals=33 point: left parenthesis 1 comma 3 comma five halves right parenthesis

How to do this , and can some one explain

What’s the answer ? use the picture to see the problem