Q2/ A. Determine the point of intersection and find the plane determine by these two lines z+1 x-2 Z-9 and 2-y= 4 2 3 dw B. Find as function of t. Where: W= In (X+Y+Z), X = cos (t), Y = sin (t), Z=4√t. dt C. Test the following surface for maxima, minima and Saddle point: Z=2xy-x²-2y²+3x+4 2

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