6 6.1 6.2 6.3

6.1

()()

6.2

(fixed cost)(variable cost)

(1) TFC(4)(2) TVC(3) TCTFC

(AC)(AFC)(AVC)

(marginal cost)MCTC

AVCACMCUMCAVCAC

TFCAFC

TVCAVC

6.3

(long-run total cost ,LTC)

(1) LTCSTCSTCLTC(2) LTC(3) LTC

(long-run average cost,LAC)

(1) LACSACSACLAC(2) LACSACLACSACLACSACLACSAC

LACU U LAC SACLACU

(long-run marginal cost,LMC)

U