Linear Combination of Vectors The above definition also extends to vectors. Let’s say that you have two vectors v and w; Each vector is multiplied by a scalar a and b, giving the expression: av + bw. The expression av + bw is called a linear combination of v and w. Using a little...
Not a function: “one to many“. In other words, let’s say you had one x-value that maps to many y-values. For example, — in coordinate notation — (2,1) and (2,10). If the first number (the x-value) repeats, then you do not have a function. To put that another way, ...