99 Problem 3. (i) Given a cash flow from one investment project: -$X, +$a, +$a,... , +$(a+ X) at timing points t = 0,1,,2,...n. please find the yield rate i of such investment, where denotes outflow while " + " inflow. (ii) Given a cash flow from investment project: --$X. +$2a, +$20...+ $(2a + X) at timing points t = 0,1,,2, n. please find the yield rate iz of such investment, where - denotes outflow while + inflow. Please verify if i2 = 211