Respuesta :

Answer:

260 units

Explanation:

C(qi) = 160 = 58(qi) - 6(qi)² + (qi)³

dC/d(qi) = 58 - 12(qi) + 3(qi)²              

d²C/d(qi)² = 6qi - 12

For d²C/d(qi)² = 0

Hence, 6qi - 12 = 0

6(qi - 2) = 0

∴ qi = 2

When, qi = 2: C(qi) = 160 + 116 - 24 + 8 = 260 units