Matthew manages a company that produces Q = 3,000K^1/2L^1/3 units per day, where K is the capital investment in thousands of dollars and L is the size of the labor force measured in worker-hours. Currently, the capital investment is $400,000 (K = 400) and the labor force is 1,331 worker-hours per day. Matthew is trying to decide whether increasing capital expenditure by $10,000 or increasing the labor force by 10 worker-hours will produce the greatest increase in daily output. Use marginal analysis to help him make his decision.