questionable formulas - worth memorizing? contract, following, investment, div

Sunshine4ever

I wanted to know what you guys think on whether it is worth it to memorize the following formulas which i consider questionable:

1. t-calc for testing significance of corr coef
2. adjusted r-squared
3. weight of active portfolio in optimal portfolio (Treynor Black)
4. Justified p/cf and div/p
5. franchise factor and growth factor
6. sinking fund factor (band of investment)
7. treasury bond contract price

That's all i could think of for now, feel free to list more

President1988

Forget 2 and 7, everything else you better know

Rasec

Doesn't it say in the reading specifically that we don't need to know #3?