Midterm 2 - Math 2041 - October 25, 2018 - 11:30am-12:45pm



You have 1 hour 15 minutes to complete the following questions.
Do your work in Maple, but copy your answers on the piece of paper you are given.

Links to the problems are: 1  2  3  4  5  6  7  8  9 

Question #0:
Let $CN$ be the computer number written on the side of your computer. Enter
CN:=your computer number;
followed by the command
(A,B,C):=((CN mod 4)+1, (CN mod 3)+5, (floor(CN/4) mod 2) + 8);
then click on the links corresponding to those numbers and enter the numbers here:

CN =

(A,B,C) =


Question #1: Click on the link corresponding to the value of A from Question #0
In the picture in links 1 through 4 (depending on the value of A) you will see a graph of a curve given in both rectangular and polar coordinates. Assuming the parameter $a=1$, give the two commands which draws the figure in both rectangular and polar coordinates (recreating the graph in the picture as closely as you can, but possibly at a different scale).













Question #2: Also use the link corresponding to the value of A from Question #0
The area of a polar region is given by the equation $\int_{\alpha}^{\beta} \frac{1}{2} r^2 d\theta$. Using the same graph as in problem 1, write the Maple command that gives you the area of (one) enclosed loop of of the graph and compute this area.













Question #3: Use the link corresponding to the value of B from Question #0
Now, using the graph from 5, 6 or 7 (depending on the value of B), find the points of intersection of the two graphs using the command solve. Copy below the commands that you used in order to find the values of x and y.











Question #4: Use the link corresponding to the value of C from Question #0
Answer the question from the link 8 or 9 (depending on the value of C).














Place your name on the top of this sheet. Write your answers to the questions on this paper. Make sure that you carefully copy punctuation correctly as part of your answer.
The text for this midterm can be found at http://garsia.math.yorku.ca/~zabrocki/math2041f18/midterm2/ in case you want to copy/paste the lines into a worksheet. You should be able to complete this quiz within the class time and you should hand your work into the professor.

You are expected to work alone on this assignment. Any indication of academic dishonesty will result in a 0 for the assignment and possible higher penalties.

Full disclosure: I borrowed the curves for these problems from this source here.