decreasing arithmetic gradient series and incresing gradient series. Find the Equivalance point Po with cash flow diagram.

Cash transactions (arithmetic gradient series) with decreasing gradient. The equivalent present worth at year 0 P_0. Given: Cash transactions (arithmetic gradient series) with increasing gradient. Required: The equivalent present worth at year 0, P_0. Cash transactions (arithmetic gradient series) with decreasing gradient. The equivalent present worth at year 0 P_0. Given: Cash transactions (arithmetic gradient series) with increasing gradient. Required: The equivalent present worth at year 0, P_0