Trigonometric graphs can be sketched when you know the amplitude, period, phase and maximum and minimum turning points. Learn about graphs of trigonometric functions in this National 5 Maths guide.
Ok, confusing title, but I am not sure how to describe this in one line. On the MBP, F1-F10 all have special functions, that by default, override the F-key. There is an option for either the hardware ...