Math Problem Statement

Suppose that the marginal revenue for a product is given by

MR = 

−48/(2x + 2)2 + 48

where x is the number of units and revenue is in dollars. Find the total revenue.

Solution

To find the total revenue, R(x)R(x), given the marginal revenue MR=48(2x+2)2+48MR = \frac{-48}{(2x + 2)^2} + 48, we need to integrate the marginal revenue function with respect to xx.

  1. Set up the integral: R(x)=MRdx=(48(2x+2)2+48)dxR(x) = \int MR \, dx = \int \left( \frac{-48}{(2x + 2)^2} + 48 \right) dx

  2. Integrate each term separately:

    • For the term 48(2x+2)2\frac{-48}{(2x + 2)^2}: Let u=2x+2u = 2x + 2, so du=2dxdu = 2 \, dx or dx=du2dx = \frac{du}{2}. This transforms the integral to: 48(2x+2)2dx=48u212du=241u2du=24(1u)=242x+2\int \frac{-48}{(2x + 2)^2} \, dx = \int \frac{-48}{u^2} \cdot \frac{1}{2} \, du = -24 \int \frac{1}{u^2} \, du = -24 \cdot \left( \frac{-1}{u} \right) = \frac{24}{2x + 2}

    • For the constant term 4848: 48dx=48x\int 48 \, dx = 48x

  3. Combine the results: R(x)=242x+2+48x+CR(x) = \frac{24}{2x + 2} + 48x + C

  4. Simplify the expression: R(x)=242(x+1)+48x+CR(x) = \frac{24}{2(x + 1)} + 48x + C

So, the total revenue function R(x)R(x) is: R(x)=242x+2+48x+CR(x) = \frac{24}{2x + 2} + 48x + C where CC is the constant of integration.

Would you like me to delve deeper into finding CC based on initial conditions or explore further?


  1. What would the value of CC be if we know the initial revenue?
  2. How would the total revenue change with respect to xx?
  3. Can we interpret the behavior of MRMR as xx increases?
  4. How can this marginal revenue formula help optimize profit?
  5. What does the concavity of R(x)R(x) tell us about revenue growth?

Tip: Always check the limits if calculating definite integrals for real applications.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Calculus
Integration
Marginal Revenue

Formulas

Marginal revenue formula: MR = dR/dx
Integral of MR to find total revenue R(x): R(x) = ∫MR dx

Theorems

Fundamental Theorem of Calculus

Suitable Grade Level

College