# dareen

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**Programming Languages:**

Python, C++, C, Java, C#, MATLAB, SQL, Arduino

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English, Arabic

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She/her

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**Feeds**

Question

the use of field graphing tools

K = 8.99e9; % Input the number of charges n = input('Enter number of charges: '); % Initialize arrays to store charge val...

4 months ago | 0 answers | 0

### 0

answersQuestion

what's the reason for getting an output at the point itself though it is not in range

i have used taylor series to find the first derivative of the following function cos(x) and got 2 diffrent approximations , i ...

4 months ago | 1 answer | 0

### 1

answerQuestion

how to get fit coefficients and the file name ?

there is a particular feature that i needed a couple of times now but i am failing at finding something to implement it inducto...

5 months ago | 1 answer | 0

### 1

answerQuestion

fitting a graph and coloring each fit

i wrote the following code % Color settings r_220_w = [10.78, 20.33, 24, 27.7, 35.86, 32.5, 33.2, 30.75, 36.83, 33.44, 32.8, ...

5 months ago | 1 answer | 0

### 1

answerQuestion

how to delete nan values from array columns without losing data from other columns

i have a huge file from a lab expremient every run gives me 4 columns and every 2 out of the 4 start with nan then 2 nan v...

6 months ago | 1 answer | 0

### 1

answerSolved

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...

8 months ago

Solved

Calculating distance of lightning based on time delay

If we know the time delay between when we see lightning and hear thunder then we can calculate approximate distance(in meters) o...

8 months ago

Solved

finding vector pair with min angle between them

given a matrix with more than one row , compare row vectors of the given matrix and find the pair with the minumum angle between...

8 months ago

Problem

finding vector pair with min angle between them

given a matrix with more than one row , compare row vectors of the given matrix and find the pair with the minimoum angle betwee...

8 months ago | 0 | 6 solvers

Question

how to build a magic matrix manually of even n*n matrix?

i have written an alogorithm magic of odd order yet could not think of one for even order i i am starting to see a pattern fo...

8 months ago | 3 answers | 0

### 3

answersSolved

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...

8 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 = ...

8 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]; ...

8 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]

8 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. <<https://i.imgu...

8 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 displayed ...

8 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 3 3 3 4...

8 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 numbers. Otherwise return false. Example...

8 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.

8 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...

8 months ago

Solved

Longest run of consecutive numbers

Given a vector a, find the number(s) that is/are repeated consecutively most often. For example, if you have a = [1 2 2 2 1 ...

8 months ago

Solved

First non-zero element in each column

For a given matrix, calculate the index of the first non-zero element in each column. Assuming a column with all elements zero i...

8 months ago

Solved

Fill a zeros matrix

The aim is to fill an array of all zeros given a numerical value and the index of row and columns for this value. 3 Inputs: ...

8 months ago

Solved

Set the array elements whose value is 13 to 0

Input A either an array or a vector (which can be empty) Output B will be the same size as A . All elements of A equal to 13...

8 months ago

Solved

Create an arrow matrix

An arrow matrix is a square matrix that contains ones on the diagonal, the last column, and last row. ...

8 months ago

Question

what does this mean , how and for what is it used ?

while playing around in the command window with arrays and matrices i tried to print x=ones and it gave me an array of size 1*...

8 months ago | 1 answer | 0

### 1

answerQuestion

how does this work some clarification

can anyone explain how this solution work i tried to read documintations for this but did not really connect the dots https:/...

8 months ago | 2 answers | 0

### 2

answersSolved

Determine if input is odd

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

8 months ago