Application of Derivatives

1. A stone is dropped into a quiet lake and waves move in a circle at a speed of 5m/s. At the instant when the radius of the circular wave is 3cm, how fast is the enclosed area increasing?

6pie

The total revenue in rupees received from the sale of x units of a product is given by R(x)= 3x^+36x+5. Find the marginal revenue when x =7.

Rs 66

{"name":"Application of Derivatives", "url":"https://www.quiz-maker.com/QPREVIEW","txt":"1. A stone is dropped into a quiet lake and waves move in a circle at a speed of 5m\/s. At the instant when the radius of the circular wave is 3cm, how fast is the enclosed area increasing?, The total revenue in rupees received from the sale of x units of a product is given by R(x)= 3x^+36x+5. Find the marginal revenue when x =7.","img":"https://www.quiz-maker.com/3012/images/ogquiz.png"}