B & M Ltd. monthly demand for shirts is given by p=5005qp=5005q, and profit function is given by P(q)=4000+200q5q2P(q)=4000+200q5q2. Find the priceat which maximum profit occurs.

The cubic function has a turning point at (3,58)(3,58).

This turning point may be classified as?

KDT Ltd. sells computer ink. The total cost function for KDT Ltd isC(q)=2q2200q+65C(q)=2q2200q+65. The revenue function isR(q)=3q2+500qR(q)=3q2+500q,where q is the number of computer inks sold. The profit function for KDT Ltd is?

Given that

is