Here are 2.6.5 and 2.6.8:

I just need the work to question (b). The answer is 39.87454% by formula 2.6.5 and 34.46967% by formula 2.6.8. Your help is greatly appreciated!!!

Sandra invests $10,832 in the Wise Investment Fund. Three months later her balance has grown to $11,902 and she deposits $2,000. Two months later her fund holdings are $14,308 and she withdraws $7,000. Two years after her initial investment, she learns that her holdings are worth $12,566. (a) Write an equation of value involving the exact dollar-weighted annual yield i over the two-year period. (b) Compute the approximate dollar-weighted annual yield over the investment period using (2.6.5) and again using (2.6.8). jA+t(0,1)Ct(1t)I j21A+(121)B(121)II=A+BI2I Sandra invests $10,832 in the Wise Investment Fund. Three months later her balance has grown to $11,902 and she deposits $2,000. Two months later her fund holdings are $14,308 and she withdraws $7,000. Two years after her initial investment, she learns that her holdings are worth $12,566. (a) Write an equation of value involving the exact dollar-weighted annual yield i over the two-year period. (b) Compute the approximate dollar-weighted annual yield over the investment period using (2.6.5) and again using (2.6.8). jA+t(0,1)Ct(1t)I j21A+(121)B(121)II=A+BI2I