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• Example 7 The importance to see it. In Derive, Derive ROTATE_X( ROTATE X(θ) simplifies to a matrix A such that A·v rotates the 3D coordinate vector v through an angle of θ radians about the x-axis, counterclockwise when viewed from the positive x-axis toward g the origin. Can we see an example? 41 Conclusion What are the main benefits of using technology i the in th classroom? l ? S Some ((personal) l) answers. 42
