8-16: Determine the open intervals on which the graph of the function is concave upward or concave downward 20-32: Find any points on inflection and discuss the concavity of the graph of the function 34-43: Find all relative extrema of the function. Use the Second Derivative Test where applicable

8. n ( x ) = x 5 - 5 x+2 14 . h ( x ) = x3 -1 2x - 16. ( y = x + 2 ( - TT, YT ) sinx 20. f ( x ) = 4- x - 3 x4 2 2. f ( x ) = ( x - 2 ) 3 ( x - 1 ) 24 . f ( x ) = x +3 V x 32 . f ( x ) = x+ 2 cosx, [o, 2 x] 34 f ( x ) = x2+ 3 x- 8 43. f(x ) = cosx- x, [o, 4 45) 40. If ( x ) = V x 2 + 1