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17h
comment Using matrices to solve questions
Look into en.wikipedia.org/wiki/Markov_chain
17h
comment For a linear system, why is direction “stored” in the variables when considering it as linear equations, but in vectors when its as a vector equation?
PS. I am not a mathematician. I am just a user of this stuff so I probably didn't do a very good job of explaining the interpretation of coordinates and the role of duality in geometry.
1d
revised For a linear system, why is direction “stored” in the variables when considering it as linear equations, but in vectors when its as a vector equation?
added 578 characters in body
1d
revised For a linear system, why is direction “stored” in the variables when considering it as linear equations, but in vectors when its as a vector equation?
added 578 characters in body
1d
answered For a linear system, why is direction “stored” in the variables when considering it as linear equations, but in vectors when its as a vector equation?
1d
revised Calculating centre of rotation given point coordinates at different positions
added 571 characters in body
1d
answered Calculating centre of rotation given point coordinates at different positions
Aug
27
accepted Envelope of two sine waves interfering
Aug
27
answered Envelope of two sine waves interfering
Aug
25
revised Find 2d point given 2d point and transformation matrix
added 32 characters in body
Aug
25
awarded  Revival
Aug
20
comment Prove the theorem on analytic geometry in the picture.
Does this mean if you cut the curves with an angle $\theta$ the difference is $\Delta \ell = \theta r$?
Aug
17
comment Tangent to the x-1 Axis
I wonder what an x-1 axis is?
Aug
9
answered Find the general solution of $\cos(x)-\cos(2x)=\sin(3x)$
Aug
7
comment Time taken to accelerate and travel 100m
Not that the weight to power ratio is $7.8 \mbox{ kg/hp}$ which is a normal value for a non-sports car.
Aug
7
answered Time taken to accelerate and travel 100m
Aug
7
comment Time taken to accelerate and travel 100m
This is more of a Physics type of question I think.
Aug
6
answered Write the expression in terms of a single sin $-\sqrt{3} \sin x + \cos x$
Aug
6
comment projecting and mapping disparate coordinate systems
First things first. Look at my answer at stackoverflow.com/a/31858246/380384 and if you can follow then we can do the cartesian to spherical transformation also.
Aug
5
answered If the product of two matrices, $A$ and $B$ is zero matrix, prove that matrices $A$ and $B$ don't have to be zero matrices