Mathematics Education PHP lesson 9 – User defined functions By Magic Monk on Friday, January 4, 2019 In this lesson we talk about how to create your own function. We also talk about how to specify the arguments (input variables) for the function and how to make the function return a value (output). education programming steempress technology Previous Post Next Post Related Posts Mathematics Education Vector applications question – Elastic collision, momentum, and kinetic energy Mathematics Education Vectors lesson 21 – Basic vector operations in Geogebra Mathematics Education Vectors lesson 20 – drawing vectors in Geogebra