Cos -2x or -cos2x, it's the difference.
Answer:
In mathematics, a differential equation is an equation that relates one or more functions and their derivatives. In applications, the functions generally represent physical quantities, the derivatives represent their rates of change, and the differential equation defines a relationship between the two.
Step-by-step explanation:
Answer: c. 29.65 + 0.90r ≤ 41
34 books would be the answer.
