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1. ### Can anybody help me with Matrix Rotation ...?

...clockwise turn arond the point (7,0). this is NOT a matrix , matrices model linear transformations, which preserve the origin. a rotation around a non-origin point WILL NOT preserve the origin.

2 Answers · Science & Mathematics · 25/09/2011

2. ### Help with linear algebra matrix representing counterclockwise rotation ?

... is the product of this mirroring matrix M with the rotation matrix R: M R = { { 1/2 , -1/2 sqrt(3)},{ -1/2 sqrt(3), -1/2}}

4 Answers · Science & Mathematics · 11/03/2013

3. ### How do you find the angle for the rotation matrix :?

What's to find - this matrix is obviously: - performing a rotation of +π/3 around the x-axis - and also the leading '-1' causes...

1 Answers · Science & Mathematics · 12/04/2008

4. ### rotation matrix question?

The inverse of rotation matrix is... M^-1 = [cos(θ) sin(θ)] [-sin(θ) cos(θ)] See: http://www...

1 Answers · Science & Mathematics · 04/02/2013

The centre is always the origin, when using a matrix . A rotation matrix is always of the form: [ cosθ sinθ ] [ -sinθ cosθ ] and it always represents rotation by an angle θ around the origin.

1 Answers · Science & Mathematics · 11/12/2009

6. ### Rotation Matrix Question?

If R(theta) = 1/17 * [-15 8 -8 -15] and the standard matrix for rotation of a 2-dim vector through angle theta is [costheta -sintheta sintheta costheta...

1 Answers · Science & Mathematics · 12/06/2012

7. ### ( Rotations on the plane.) Apply the matrix Calculus 3?

Multiply the rotation matrix cos(t) -sin(t) sin(t) cos(t) by the column vector x y and get x...x,y) to origin squared. Use dot product to show cosine of angle of rotation is t.

1 Answers · Science & Mathematics · 22/09/2013

8. ### reflection and rotation in matrices in maths 2d?

The matrix for reflection in the y axis is (-1 0) (0 1) The matrix for rotation 90 degrees anticlockwise is (0 -1) (1 0) To find the answer for (b) multiply them together with the first one on the right.

2 Answers · Science & Mathematics · 28/11/2009

9. ### is 3 by 3 matrix rotation formula different from 4 by 4 matrix rotation formula?? JAVA Help too?

The 4x4 rotation matrix is a simplification of the 4x4 combined affine transformation ( rotation +translation... in numerical accuracy. The 4x4 matrix consists of the normal rotation matrix in the first 3x3 block, zeros in the other off-diagonal terms...

1 Answers · Science & Mathematics · 03/07/2012

10. ### What is the rotation matrix for a 2 x 2 rotation of 255 degrees?

the rotation matrix for a 2x rotation is R = cos theta -sin theta sin theta cos theta... matrix brackets around those four elements to find this rotation matrix , substitute theta =255 and get: R = -0.26 0.97 -0.97 -0.26

1 Answers · Science & Mathematics · 18/09/2011