Posted by **Sara** on Monday, December 4, 2006 at 10:05am.

Suppose a publishing company has found that the marginal cost at a level of production of x thoudsand books is given by:

C'(x)=50/sqrroot(x)

and the fixed cost is $25,000. Find the cost function C(x).

C= INT C'= INT 50/sqrtx= 100 sqrtx + F where F is the fixed cost at x=0