Checkout JEE MAINS 2022 Question Paper Analysis : Checkout JEE MAINS 2022 Question Paper Analysis :

The total revenue (in Rupees) received from the sale of x units of a product is given by R(x) = 13x2 + 26x + 15. Then, the marginal revenue (in Rupees) when x = 15, is

1) 116

2) 126

3) 136

4) 416

5) 146

Solution: (4) 416

R(x) = 13x2 + 26x + 15

The marginal revenue = (d / dx) (R (x))

= (d / dx) (13x2 + 26x + 15)

= 26x + 26

= 26 * 15 + 26

= 390 + 26

= 416

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