In Lyx, I have the following Display Formula:
I want to split it into:
I found this https://wiki.lyx.org/Examples/FormulaOnMultipleLines and In Lyx how do I set up a display formula over several lines. but still cannot get multiline equations to work!
For example the answer by riddleculous: "You can use the split environment within the equation and make new lines with \" - How can I make this work?