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# Mara

##### Last seen: 29 days ago
51 total contributions since 2020

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If you follow this code, you will see a graph, but when you hit enter, line 45 keeps saying "'l' is an unrecognizable function or variable." But even though for I= 2:k is given, what is the problem?? ?
Your loop variable is a an upper case i, but in your loop you use a lower case l, which look identical in some fonts.

3 months ago | 0

Comparing strings of different lengths.
So is your question how to shorten your code? Maybe try this statement if strcmp(filename1, filename2) % Whatever you want...

3 months ago | 0

How to extract corresponding values of x-axis based y-axis values.
maybe use ismember: idx = ismember(y, [5,6,74,5,67]) xvalues = x(idx) P.S. sorry for the editing, I now read your problem c...

7 months ago | 0

Plotting multiple functions, while showing only parts of them
Hello, you can plot only to the maximal y-value by finding the index of it in your vector of y-values. When you plot x and y, y...

7 months ago | 0

Solved

Getting the indices from a matrice
Getting the indices from a matrice. Inspired by Problem 645. Getting the indices from a vector by the great Doug Hull. Given a...

7 months ago

Solved

Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

7 months ago

Solved

Magic is simple (for beginners)
Determine for a magic square of order n, the magic sum m. For example m=15 for a magic square of order 3.

7 months ago

Solved

Make a random, non-repeating vector.
This is a basic MATLAB operation. It is for instructional purposes. --- If you want to get a random permutation of integer...

7 months ago

Solved

Roll the Dice!
*Description* Return two random integers between 1 and 6, inclusive, to simulate rolling 2 dice. *Example* [x1,x2] =...

7 months ago

Solved

Number of 1s in a binary string
Find the number of 1s in the given binary string. Example. If the input string is '1100101', the output is 4. If the input stri...

7 months ago

Solved

Return the first and last character of a string
Return the first and last character of a string, concatenated together. If there is only one character in the string, the functi...

7 months ago

Solved

Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

7 months ago

Solved

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...

7 months ago

Solved

Check if number exists in vector
Return 1 if number _a_ exists in vector _b_ otherwise return 0. a = 3; b = [1,2,4]; Returns 0. a = 3; b = [1,...

7 months ago

Solved

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...

7 months ago

Solved

Swap the input arguments
Write a two-input, two-output function that swaps its two input arguments. For example: [q,r] = swap(5,10) returns q = ...

7 months ago

Solved

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]; ...

7 months ago

Solved

Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

7 months ago

Solved

Length of the hypotenuse
Given short sides of lengths a and b, calculate the length c of the hypotenuse of the right-angled triangle. <<http://upload....

7 months ago

Solved

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...

7 months ago

Solved

Generate a vector like 1,2,2,3,3,3,4,4,4,4
Generate a vector like 1,2,2,3,3,3,4,4,4,4 So if n = 3, then return [1 2 2 3 3 3] And if n = 5, then return [1 2 2...

7 months ago

Solved

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...

7 months ago

Solved

Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

7 months ago

Solved

Return area of square
Side of square=input=a Area=output=b

7 months ago

Solved

Maximum value in a matrix
Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

7 months ago

Solved

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

7 months ago

File-loop, for loop,importing excel data
%Read each CSV file, change the text data to numeric and work with it clear; clc; dirroot='C:\Documents\Excel\'; for L=1:2...

7 months ago | 0

| accepted

Replacing values in a matrix based on values in a column vector
I came up with this. But not sure if this the easiest way to do it. yMat = zeros(length(y)*10, 1); yMat((y-1)*length(y)+ (1:le...

7 months ago | 1

Unable to perform assignment because the size of the left side and right side are different
Hello Mustafa, when you preallocate the variable params, you have a little twist in there, since you defined it as having the sa...

7 months ago | 1

| accepted