Vectors and matrices

My Research is found at: http://www.devmaster.net/wiki/Vectors_and_matrices

This research explains how to use matrices in 3-dimensional space and that could be explained by explaining vectors that we already started earlier today in class, it shows us how to add or subtract two vectors which is just like ordinary numbers, and how to multiply a vector product by a scalar.

Here are two examples how to add or subtract two vectors.

• You can add two vectors by adding their coordinates. Geometrically, thinking of vectors as arrows, this corresponds to taking the tail of one arrow and putting it at the head of the other arrow. So if the vector a points from P to Q, and b points from Q to R, then the combined vector a + b points from P to R.

• You can also subtract two vectors, by subtracting their coordinates. Geometrically, this corresponds to moving both vectors so that they start at the same point, and drawing the vector that connects their end points. So if a points from P to Q, and b points from P to R, then b - a points from Q to R.

What did i learn:

i learned how to use the matrix library in the bottom of the article, that i could use in my C++ courses.

Jose