1. The problem statement, all variables and given/known data Using the given equations prove that 2. Relevant equations , , + (it won't render together in Maple for whatever reason) 3. The attempt at a solution So I started with expanding the Jacobi Identity (the third relevant equation) and through tedious algebra arrived at proving it unnecessarily and then finding that then by applying the second equation this goes to I am unsure how to proceed from here however. The question also gives the hint that the trick to solve it is to take the appropriate particular values of the labels a,b,y in the Jacobi identity but I am unsure how to use this. Any help would be greatly appreciated.