Write general purpose m-files to 1. multiply two signals 2. add and subtract two signals 3. shift signals by any sample generate two sinusoidal signals of the form cos (on). with 01 = b/10 and 02 = b/5, where b is your birth month, test the three functions and plot the results including x1 (n) = cos (n01) and x2 (n) = cos (n 02) let the signals you consider span the indices from -b to +b, where b is your birth month, too.

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?

In new york city at the spring equinox there are 12 hours 8 minutes of daylight. the longest and shortest days of the year very by two hours and 53 minutes from the equinox in this year the equinox falls on march 21 in this task you use trigonometric function to model the hours of daylight hours on certain days of the year in new york city a.what is the independent and dependent variables? b.find the amplitude and the period of the function. c.create a trigonometric function that describes the hours of sunlight for each day of the year. d. graph the function you build in part c. e. use the function you build in part c to find out how many fewer daylight hours february 10 will have than march 21. you may look at the calendar.

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?