PDE 1003W23a8.pdf X + X File | C:/Users/billy/Downloads/1003W23a8.pdf to . . . | ~ | V Draw 2 | | Read aloud + 1 of 2| 2 | ED Q 16 8 ASSIGNMENT 8 DUE FRIDAY MARCH 31, 11:30AM, IN CROWDMARK o + 1. Let f(x) = - In(1 + x2). You may assume that f' (20) = 1 + 2 2 f" (2 ) = 1 - 2 2 (1 + 2 2) 2 (a) (2 marks) Find intervals where f is increasing, and intervals where f is concave up. (b) (2 marks) Obviously x = 0 is a critical number for f. Show that this critical number is a local minimum. Is it a global minimum? Explain