I took real analysis (ra) 1, 2.
I did horribly in ra 1 during the sophomore year(B-), got A in ra2 in senior year.
The prof agreed to write me a letter informally when needed, now is the time to ask.
Is it rude to ask him if he can write something like 'he did bad in ra1 but he is alright bc he did well in ra2?"