Dynamic Calculus

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The revenue '\(R\)' received by a company is described in terms of the number of units '\(s\)' of an item that are sold. The marginal revenue '\(MR\)' is the derivative of the revenue function. For a particular company, the marginal revenue from the sale of a product is given by the equation \(MR = 4s + 13\). How do we calculate the revenue received?
[You can reset the applet at any time by clicking the 'circular arrows' icon in the top right corner]

 

 

  1. Given that \(MR = 4s + 13\), use the process of anti-differentiation to find the revenue function, \(R\). Confirm your answer by clicking the 'show anti-differentiation' checkbox.
  2. The primitive function \(R\) represents a family of curves, each member of which corresponds to a unique value of the constant, \(k\). Move the slider 'k' and observe other possible graphs of the revenue function.
  3. In the context of this problem, what is the only valid value of \(k\)? [Hint: What revenue would the company receive if zero units were sold?] Move the revenue function to its correct position by moving the slider k.
  4. How much revenue will the company receive from the sale of 50 units of the product? Check your answer by clicking the 'show revenue calculation' checkbox.
  5. What is the minimum number of units the company must sell in order to receive revenue in excess of $1000?