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Tamil Nadu Board of Secondary EducationHSC Commerce Class 12

Find the revenue function and the demand function if the marginal revenue for x units is MR = 10 + 3x – x2

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Question

Find the revenue function and the demand function if the marginal revenue for x units is MR = 10 + 3x – x2

Sum
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Solution

The marginal revenue function

MR = 10 + 3x – x2

The Revenue function

R = `int ("MR")  "d"x`

= `int (10 + 3x - x^2)  "d"x`

R = `[10x + 3(x^2/2) - (x^3/3)] + "k"`

When x = 0

R = 0

⇒ k = 0

∴ R = `10x + (3x^2)/2 - x^3/3`

⇒ px = `10x + (3x^2)/2 - x^3/3`

⇒ p = `(10x + (3x^2)/2 - x^3/3)/x`

∴∴ The demand function p = `10 + (3x^2)/2 - x^2/3`

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Application of Integration in Economics and Commerce
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Chapter 3: Integral Calculus – 2 - Exercise 3.2 [Page 72]

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Samacheer Kalvi Business Mathematics and Statistics [English] Class 12 TN Board
Chapter 3 Integral Calculus – 2
Exercise 3.2 | Q 16 | Page 72

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