Given probabilities of taking paths in a graph from each node, use
matrix multiplication to find the probability of going from one
vertex to another in 2 stages, or 3, or 4 or even 100.
Sketch the graphs of y = sin x and y = tan x and some straight
lines. Prove some inequalities.
Plot the graph of x^y = y^x in the first quadrant and explain its
Investigate the graphs of y = [1 + (x - t)^2][1 + (x + t^)2] as the
parameter t varies.