# Posts by ziya

Total # Posts: 2

**pre calc**

What is the first natural number that causes the statement: (2 + 3)^n **less than equal to sign** 4^n + 3^n to fail? 1 2 3 4 5

**pre calc**

If Sn represents the sum of the squares of the first n natural numbers, use proof by induction to find which of the following expressions for Sn is true? Sn=n(n-1)/(3) Sn=n(2n-1)/(3) Sn=n(n+1)/(3) Sn=n(n+1)(2n+1)/(3)