Some operations are not implemented directly, but can be achieved by combining operations.

Calculate Weighted Average along a hierarchy
SUBEACH Pattern
FINDFIRST and Populate
Calculate runtime of projects
1-X Pattern
Combined Growth Pattern
Break-down Data by Dimensions
Move yearly data by 6 months
Rollforward data with average growth rate from actuals
Getting the Days per Month/Year with DROPLEVEL() and EXPAND()
Difference between YOY_REL(), YOY_ABS(), and RATIO(PY())