The sum to infinity only settles nicely if the common ratio’s absolute value is less than one, yaar. Otherwise, the numbers keep running away like my Splendor’s odometer—no fixed destination. I learned |r|<1 matters because I forgot it in a test and got a big zero, while the rain outside was making my roof sag a little more. So in my life, that formula is forever tied to the cost of a tin sheet and the smell of wet mud.
#exams#study
Jump in to reply — no account needed.