The curve C is given parametrically by  . Find the interval of t where curve C is concave upward. 

Question #1 

Any mistake in the following process? If so, where is it initiated?  Evaluate  

Any mistake in the following process? If so, where did it initiated?  Evaluate  

Extra credit – reflection 

Determine if converges. If it converges, find its sum. State the common ratio This series . The sum of the series  

Question # 5

Question # 2 

Question # 17 

Most death investigation cases involving hanging are: