Differential Equation
Invariants under Orthogonal Transformation Orthogonal Transformation We consider here three types of transformation of axes or transformation of coor dinates, namely translation rotation translation and rotation . These are called orthogonal transformation when both the systems of axes are rectangular. The combination of translation and rotation is called a rigid body motion. Invariants Some expressions remain unchanged under an orthogonal transformation. These known as invariants of orthogonal transformation. ---------------------------------------------------------------------------------------------------------------- Exercises-viii The origin is shifted to the point (3.-3) without changing the directions of axes. If the coordinates of P, Q, R are (5,5), (-2, 4) and (7.-7) respectively in the new system, find the coordinates of these points in the old system. 2...