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प्रश्न
The total revenue received from the sale of x unit of a product is given by R(x) = 3x2 + 36x + 5. Find the marginal revenue when x = 5.
उत्तर
Given, R(x) = 36x + 3x2 + 5
`\implies` MR = `d/dx(36x + 3x^2 + 5)`
= 36 + 6x
∴ MR(x = 5) = 66
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