I got wrong in these questions please show me correct answers

1 A for what value of i will y z x + k Vi have a relative maximum at x = 4? y = 4+2K A) 2 ly= B) 4 D ) - 4 E) none of these EXAMPLE 5. The graph of f is given. Sketch the graph of f" (x). f (x) A f( ) 2 12 3 EXAMPLE 1. Fill in the sign. intervals A B C D E [ G H f' (x ) + + + concavity. VF" (x) VIPLE 5. Let f be a continuous function on [0, 5] whose first and second derivatives have the following signs and values. OSX 2 [-S - V (0 2 ) U ( 2,3] (b) Find x where local maxima and local minima of foccur. Justify . X= - 2 max X = -1 MIN *( ) Find where f concave up. Justify . ( - DO , - 1 ) (1 1 0 ) Set Find inflection point of f. Justify