Prove the following theorems. Use a direct proof to find constants that satisfy the definition of Theta(n^2) or use the limit test. Make sure your proof is complete, concise, clear and precise. Theorem 1. 3n^2 - 2n - 4 elementof Theta (n^2) Theorem 2. log(n^2 + 1) elementof Theta(log(n)) Theorem 3. 2^n + 2 + 2 elementof Theta (2^n)