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if (u) du =1 If (x)de =1 b. Use the second derivative test to find the intervals where the function is concave up or concave down. Also indicate the points of inflection. If(x)dx = f(x)dx: Concave Up: " (x ) to (21 0 ) Concave Down: f" (x ) CO-(-po , 2) Relative Maximum : Relative Minimum: 6 . Evaluate the definite integral of the algebraic function . 2x2 ( x3 - 4) dx 7. Use the Second Fundamental Theorem of Calculus to find F' (x). 16x2 cos(4t) dt b. fin (x) t - 4 dt