(20 points) Let f(x) = x + 8 ln | x + 1 |. i) Compute...

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(20 points) Let f(x) = x + 8 ln | x + 1 |. i) Compute f"(x) and determine the p.p.o.i., if any ii) Determine the open intervals where f(x) is concave up and the open intervals where f(x) is concave down iii) What are the inflection points? (20 points) Let f(x) = x + 8 ln | x + 1 |. i) Compute f"(x) and determine the p.p.o.i., if any ii) Determine the open intervals where f(x) is concave up and the open intervals where f(x) is concave down iii) What are the inflection points?