Problem 2: [10 pts] Consider the integral (3r + 1)2 de A. [10 pts Evaluate this integral. Make sure to show all of your steps and simplify your final answer. dx In (3 x + 1 ) (3 x + 1 )2 9 (1 x +1 ) 0 X X dx dx 14in(4) +1 _ 3 1 (3 x + 1 )' 4 7 3 x t l d x 7 - du 4 1 h ( 4) - 3 u -1 i du - In ( u ) 4 du n +1 U - 1 in lu ) qu B. [10 pts] State two different regions R1 and R2 in the ry-plane so that the area of Ri is represented by this integral and the area of R2 is also represented by this integral. Make sure to justify why this integral represents these areas