A firm is minimizing costs of producing output Q by using a combination of capital and labor denoted by (K, L ) explain and show the graph

A-Suppose this firm expands output from Q0 to Q1 and then again to Q2 .assuming the cost of both capitals. and. labor doesn't change; show what the firm's in the long-run expansion path would look like?

b- Comparing the long-run expansion path and the short-run expansion path shows that it is always cheaper to expand output in the long run than it is to expand in the short run when the amount of capital cannot be altered.?