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Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

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Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

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Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

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Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

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Is my wife right?
Regardless of input, output the string 'yes'.

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Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

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Add two numbers
Given a and b, return the sum a+b in c.

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Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

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Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

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Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

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Fahrenheit to Celsius using multiple statements
Given a Fahrenheit value F, convert to a Celsius value C. While the equation is C = 5/9 * (F - 32), as an exercise use two state...

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Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

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Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

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Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...

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Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

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bug in zoom in timeseries plot
before i report a bug i want to ask if someone have a problem with the zoom button on a timeseries plot. i create a time-seri...

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How Can I Assign variable Name?
you can use <http://www.mathworks.com/help/matlab/ref/eval.html eval> function.but it not recommended. and you cannot use / in ...

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create new matrix with special structure
The simple way: for j=0:2:m-1 for i=1:n newmatrix(1+j,2*i-1:2*i)=p(j+[1 2],1); end end

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Concatenate two cells into another
do you try to use <https://www.mathworks.com/help/matlab/ref/strcat.html strcat>? It allow you to concatenate two cells. ...

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i dont know why my code is not working..
plot(f,Pyy(1:2^(N-1))); the length of pyy in 14 so you cannot take cell number 16384 (2^13). another problem: length(f)=81...

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Save figures in a subfolder after 2 for loops?
use <http://www.mathworks.com/help/matlab/ref/mkdir.html mkdir> to create a folder and change the folder name you save on to the...

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using xlsread for cell variable
I have a data store in .csv files. in the data i have vector of number that i want get in cell not in string (and some more data...

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save an excel file to be read only
can we save data on excel file (by xlswrite function or other way) and define the file to be read-only from matlab?

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find n-st element that meet a logical expression
I have 2 question: 1) find function can give the all n-th element (first or last) that meet a logical expression. i want only t...

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Function to aggregate data
first you don't need to put them together, you just need to track the line you want and take them from the second matrix (for ex...

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dynamic y-tick label
It have a way to save the y-tick to be dynamic and decide what will be the label format. In default is show 5 number, i want to...

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save size of Matlab environment variable
Hi, I have some question about the presentation of variable in Variables window. 1) I have a matrix with 18 Column. when ...

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It is possible to find all m-file i call to another m-file?
my problem is that i create a function and call it in several programs (m-files), now i find a better way and change the functio...

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Problem in using the "While" loop function
you need to define all variables. n(1)=n0; while 1 if n(end) <=0 break; end n(end+1)=n(end)-S*exp(...

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plotting using data from a cell array
you can use <http://www.mathworks.com/help/matlab/ref/bar.html bar> and specify xlabel name. figure name = {'m1';'m2';'m...

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