You need to evaluate all second degree terms, 3x^2−2xy3y^2 In this case it will work, as the coefficients of x^2 and y^2 are equal, so that the terms 2\cos\theta\sin\theta XY will cancelProblem 2 Determine the global max and min of the function f(x;y) = x2 2x2y2 2y2xy over the compact region 1 x 1;X2y − − 0 x − − 0 The positive and negative contribution from the integral cancel out in these two cases so the integrals are zero Example 59 Find I = R R S Fn dS where F = (2x,2y,1) and where S is the entire surface consisting of S1=the part of the paraboloid z = 1−x2 −y2 with z = 0 together with S2=disc {(x,y) x2
Finding An Equation Of A Tangent Plane In Exercises Chegg Com
