Write a class lab7b that implements the following methods: public static int[] getrow(int[][] a, int i) { // returns row number i out of the specified array a[][] // fixme // check that i is within range of valid indexes for a, else return null // return row (this is a one-dimensional array) } public static int[][] copy(int[][] a) { // returns a copy of the specified array a[][] // assume each row in `a` has the same number of columns // fixme : make a new 2-d array the same dimensions as a // row size is a. length. column size is a[0].length // fill the new array with contents of a // return the new array } public static boolean equals(int[][] a, int[][] b) { // returns false unless the two arrays have the same dimensions // and the same elements at each position // fixme: // if a does not have same number of rows as b, return false // in a nested loop, check that a and b have same number of columns, else return false // check that each a[i][j] is same as b[i][j], else return false // return true if all is well }

Arectangular room is 4 meters longer than it is wide and its preimeter is 32 meters find the dimensions of the room

Now you’re on your own. include a short summary of this section with plots in your lab report. write a matlab script file to do steps (a) through (d) below. include a listing of the script file with your report. 1 the soundsc(xx,fs) function requires two arguments: the first one (xx) contains the vector of data to be played, the second argument (fs) is the sampling rate for playing the samples. in addition, soundsc(xx,fs) does automatic scaling and then calls sound(xx,fs) to actually play the signal. mcclellan, schafer, and yoder, dsp first, 2e, isbn 0-13-065562-7. prentice hall, upper saddle river, nj 07458. c 2015 pearson education, inc. 4 mcclellan, schafer and yoder, signal processing first. prentice hall, upper saddle river, new jersey, 2003. c 2003 prentice hall. (a) generate a time vector (tt) to cover a range of t that will exhibit approximately two cycles of the 4000 hz sinusoids defined in the next part, part (b). use a definition for tt similar to part 2.2(d). if we use t to denote the period of the sinusoids, define the starting time of the vector tt to be equal to t , and the ending time as ct . then the two cycles will include t d 0. finally, make sure that you have at least 25 samples per period of the sinusoidal wave. in other words, when you use the colon operator to define the time vector, make the increment small enough to generate 25 samples per period. (b) generate two 4000 hz sinusoids with arbitrary amplitude and time-shift. x1.t / d a1 cos.2

Which computer tools allow you to communicate with coworkers, family,and friends