Can someone help me understand how to derive the implied interest rate or spot rate in BBG FXFA?
I actually get why the Forward rate, F_Ask and F_Bid are derived using the formula in the picture.
The problems are the other formula. I thought by rearranging the terms in the implied forward rate I can get the implied rate for AUD or USD or spot. But it appears the bid/ask need to be twisted as well.
Can someone help me with this? Probably using N_Bid formula as an illustration for its economic meaning.
Thanks in advance.