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Define the function f: R{-1,1} - R by 10x- +8 f ( x ) = x' - 1 (a) Compute the intervals on which f

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Define the function f: R\\{-1,1} - R by 10x- +8 f ( x ) = x' - 1 (a) Compute the intervals on which f is increasing. (5 marks) Determine the intervals on which f is concave up. Show all your steps clearly. (5 marks) (b) Determine the horizontal and vertical asymptotes of f. Justify your answers. (7 marks)

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