9 votes
1
If $n$ is a power of $2$, then the minimum number of multiplications needed to compute $a^n$ is$\log_2 n$$\sqrt n$$n-1$$n$
5 votes
2
4 votes
3
4 votes
5
when ∀xP(x) Q(x) is givendoes it mean (∀xP(x)) Q(x) or it means ∀x(P(x) Q(x))?in short precedence of quantifiers is greater or implies is greater?