Question: Help 2. Determine whether the graph of the function is concave up or concave down is the interval containing the given x-value. Verify graphically. a.

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2. Determine whether the graph of the function is concave up or concave down is the interval containing the given x-value. Verify graphically. a. f (x ) = 2x2 +5x+4,x=0 b. f ( x ) = - 8x2 + 4x - 1, x =-1 c. f(x) =x+2x2 - 3x+1,x=0 d. f ( x ) = 2,x=2 3. Show that the function has a point of inflection in the interval containing the x-value. Verify graphically. a. f (x) = x' + 12x, x= 0 b. f ( x ) = 2 +6x2 - x' , x = 2

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