Answer Happy

Please solve the following questions with details. Correct answer without substantial work may receive ZERO point. (1) Let all = 1, 15011 = 2, (2,5) = 5. Find ||2a – 36|| (2) Find the equation of the plane, which passes through the point (3.-2,9) and (-6,0. - 4), and is parallel to the plane 2x - y + 4z - 8 = 0. (3) Find the total differential of the function z = In(1 + x2 + y2) at the point (1.2). (4) Find the second order derivatives of the implicit function y determined by y = 2rarctan (5) Consider the following space curve m2 + y2 = 1 ya +2 -1. Find the equations of the tangent line and normal plane at the point (1.0.1)