Write a function m-file that takes as input a matrix a and a vector x, and as output gives the product y = ax by row, as defined above (hint: use a for loop to define each entry of the vector y.) your m-file should perform a check on the dimensions of the input variables a and x and return a message if the dimensions do not match. call the file myrowproduct. m. note that this file will not be the same as the myproduct. m example. test your function on a random 4 × 4 matrix a and a random 4 × 1 vector x. compare the output with a*x.

What provides an array of buttons for quick access to commonly used commands and tools

These statements describe lists in presentation programs: a. bullets can be turned off and on. b. bullets cannot be turned off. c. bullet styles, colors, and sizes can be changed. d. lists don't have to use bullets or numbers. e. numbering styles, colors, and sizes can be changed. f. numbers can be turned off and on. g. numbers cannot be turned off. select all that apply

3.12: the speed of sound the speed of sound depends on the material the sound is passing through. below is the approximate speed of sound (in feet per second) for air, water and steel: air: 1,100 feet per second water: 4,900 feet per second steel: 16,400 feet per second write a program class the speed of sound that asks the user to enter “air”, “water”, or “steel”, and the distance that a sound wave will travel in the medium. the program should then display the amount of time it will take. you can calculate the amount of time it takes sound to travel in air with the following formula: time = distance/1,100 you can calculate the amount of time it takes sound to travel in water with the following formula: time = distance/4,900 you can calculate the amount of time it takes sound to travel in steel with the following formula: time = distance/16,400