hi,

i'm currently doing questions on graphs of cubic functions and i'm encountering something i don't quite understand, the book keeps saying something like "the coefficient of $\displaystyle x^3$ is $\displaystyle + 2$ so the shape of the graph is the same as $\displaystyle y = x^3$ when x is numerically very large."

what does this mean and why? and why would it not be the case if x were small?

thanks for any info, mark