Lecture 9: Sum and Product Rules

Question 1

cost and marginal cost

Answer 1

• the cost function C(x) tells the total cost of producing x units of a product. the derivative C(x) = d/dxC(x) and is the marginal cost

Question 2

the product rule

Answer 2

let f and g be two functions
d/dx[f * g] = df/dxg+fdg/dx