Divide using polynomial long division (5x^3 + x^2 + x - 13) divided by (x^2 - 1)

5x - 4 + 5x-13/x^2-1

5x + 1 + 4x-14/x^2-1

5x + 6 + -3x-13/x^2-1

5x + 1 + 6x-12/x^2-1

The difference is 5,100m?

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.