To plot the function graph one need to input the function in input field, separate one function from another by means of comma semicolon and push the "Plot" button. The variable of the function is always x.
You can plot any of the following functions or their combinations: sin(x), cos(x), tg(x), ctg(x), arcsin(x), arccos(x), arctg(x), arcctg(x), ln(x), ex, sh(x), ch(x), th(x), cth(x), sqrt(x), abs(x). To write the power use "^" sign.
Also, you can put single point to plot. To draw the point, one need to input its coordinates in format (x0, y0). To draw multiple points, the input format should be: (x0, y0), (x1, y1),. . ., (xn, yn).