4+4

Find the limit as x approaches infinity of (ln(x))^2 / x.

What is the sum of the first n natural numbers if n is odd?

In ΔABC, if ∠A=60°, a=5, and b=7, and in ΔDEF, ∠D=60°, d=5, and e=7, prove ΔABC ≅ ΔDEF.