3 ms·
The book is sometimes confusing. See https://math.stackexchange.com/q/5027820 https://math.stackexchange.com/q/5027820 for example.
by The_suffocated 2y ago
The book is sometimes confusing. See https://math.stackexchange.com/q/5027820 https://math.stackexchange.com/q/5027820 for example.