National 5; Working with the graphs of trigonometric functions Example. Trigonometric graphs can be sketched when you know the amplitude, period, phase and maximum and minimum turning points.

Excel has over 475 formulas in its Functions Library, from simple mathematics to very complex statistical, logical, and engineering tasks such as IF statements (one of our perennial favorite ...

Solving quadratic equations - Edexcel Graphs of quadratic functions. ... Example. Draw the graph of \(y = x^2 -x – 4 \) and use it to find the roots of the equation to 1 decimal place.