Apple, a multiproduct firm, produces iPods and iPhones. Suppose the firm's cost function for iPads (product 1) and iPhones (product 2) was recently estimated as:
C(Q1Q2) = 75 - 0.25Q1Q2 + 0.10Q12 + 0.20Q22
Are there economies of scope in producing 10 units of product 1and 10 units of product 2?