Class 12

Math

Calculus

Application of Derivatives

The total revenue in Rupees received from the sale of $x$ units of a product is given by $R(x)=3x_{2}+36x+5$. The marginal revenue, when $x=15$ is.

- 116
- 96
- 90
- 126

$⇒Marginal revenue=dxdR(x) =6x+36$

Thus at $x=15,Marginal revenue=6(15)+36=126$