ENGR $1204$ Programming Languages in Engineering

Homework $3$

The first problem is from S$.$ Attaway, MATLAB $-$ A Practical Introduction to Programming and

Problem Solving $(6$th Edition$).$

For each problem, print out the script file if created along with the function file$($s$)$ and the

relevant Command Window output. Also, show analytical work where appropriate.

$(50$ points$)$ Chapter $6-$ Exercise $18$

Test your program using the triangle with three points $(0,0),(1,0),$ and $(0,1).$

$(50$ points$)$ The cost of manufacturing $n$ units $($where $n$ is an integer$)$ of a particular product

at a factory is given by the equation:

$c(n)=5n^2-44n+11$

a$)$ Write a script mfgcost that will

prompt the user for the number of units $n$

call a function costn that will calculate and return the cost of manufacturing n units

print the result $($the format must be exactly as shown below$)$

b$)$ Next, write the function costn$,$ which simply receives the value of $n$ as an input

argument, and calculates and returns the cost of manufacturing n units.

Here is an example of executing the script:Enter the number of units: $100$

The cost for $100$ units will be $$45611\mathrm{.}00$

c$)$ Verify the result shown for $n=100$ and for $n=$ ###$,$ where ### are the last three

digits of your student ID number.

use MATLAB to show work.