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# MATH221 Business Mathematics II

Group Project

Instructions

• Students are required to organize themselves in group. The Group size can be up to a maximum of four (4) students.
• Once organized, the group members HAVE to self-enroll in the groups created on Blackboard.
• Each group should select one specific project from the list below (in other words, two groups CANNOT work on the same project): First come first served!
• You need to use the provided template (available on Blackboard) to write the report.
• To solve the questions below you need to useMatlab, which is available in the computer lab.
• If you want to useMatlabon your computer (interactive use through Citrix cloud), you will find on Blackboard the instructions on how to get it.
• I am available during office hours to answer your questions regarding the project questions and Matlab

Part 1

For the function f(x)=⋯

1. Find the equations of the two tangent lines at the points x = … and x = …, respectively.
2. Find the intersection point of the two tangent lines, if any.

Part 2

Consider the following demand, supply and total cost functions:

Demand function: …

Supply function:

1. Determine the price and quantity at the equilibrium.
2. Calculate the consumer surplus.
3. Calculate the producer surplus.

Part 3

If the function is subject to the constrain

1. Use Lagrangian multipliers method to find the critical points of the function f(x,y).
2. Plot the function in the 3-D graph in MATLAB.
3. Using Matlab function “ fmincon”, find the maximum and minimum of the function f(x,y).

Part 4

Suppose that a restaurant has certain fixed costs per month of \$5000. The fixed costs could be interpreted as rent, insurance etc. The marginal cost function of the restaurant is given by:

dc/dq=⋯

where c is the total cost in dollars of producing q units of good per week.

1. Find the cost of producing q1=⋯units,q2=⋯ units and q3=⋯ units per week.
2. What do you notice? Explain your results.
 Group Part 1 Part 2 Part 3 Part 4 1 f(x)= x3-x2+1 Points: x=1 & x=2 D: p=160 e-0.04q S: p= 20 e0.04q f(x,y)= 3x+4y g(x,y)=x2+y2=100 dc/dq=[0.5(0.2q2-10q)+0.3] q1=10000;q2=15000;q3=25000
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