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Multiply by 3
Given the variable x as your input, multiply it by three and put the result in y.

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Vectorizing, too easy or too hard?
Please insert a . before any ^, * or / in the string. That's it!!

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Negative Infinity
Round the given array a towards negative infinity.

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Check bounds
Assign inRange with 1 if userWeight is greater than 100 and less than or equal to 200.

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How can I import ascii File
<https://it.mathworks.com/help/matlab/ref/textread.html>

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Twins in a Window
<http://en.wikipedia.org/wiki/Twin_primes Twin primes> are prime numbers that differ by 2, such as [11,13] or [41,43]. Write a f...

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Given a matrix, return the last eigen value
Given a matrix, return the first eigen value For example: x = magic(5) 17 24 1 8 15 23 5 7 14 ...

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Roots
Find out the roots of a given polynomial equation.Given are the coefficients of the equation.

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How can I find the connected components of an image and then label them?
There are matlab functions: %compute conn components CC = bwconncomp(BW); %label them L = labelmatrix(CC);

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Dosage by weight
A machine administer's medication dosage based on weight. Write an if-elseif-else statement that assigns the appropriate dosageA...

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Preset rpm speeds
A centrifuge has four preset speeds. Write a switch statement that assigns rpmSetting with the appropriate rpm speed given prese...

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How many jokers?
* Given DNA codes of a group of suspects, * and a code for certain types of jokers, * Count how many jokers of that type. * ...

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R2014b fails to save fig file from a very large plot
I suggest you to use the known function downloadable at <https://it.mathworks.com/matlabcentral/fileexchange/23629-export-fig>...

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Colon operator of two vectors
You are given two vectors of equal length: VecStart, VecEnd Each vector contain a set of integers, where VecEnd(j)>=VecStar...

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Sum the entries of each column of a matrix which satisfy a logical condition.
Given a numeric matrix A and a logical array L of the same size as A, return a row vector S containing the columnwise sums of th...

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Sum the elements in either diagonal of a square matrix
Sum the elements of a square matrix that lie on either the major diagonal or anti-diagonal.

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Assignment statements based on input value
Write an if-else statement that assigns finalValue with userValue + 5 if userValue is greater than 100. Otherwise assign finalVa...

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Symmetry of vector
Determine whether the vector is symmetric or not (vector could be even or odd in length). For example: x = [1 2 3 3 2 1] ...

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Insect population
An insect population doubles every generation. * Write a while loop that iterates numGeneration times. * Write a statment ...

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For loops: Odds sum
Write a for loop that assigns summedValue with the sum of all odd values from 1 to userNum. Assume userNume is always greater th...

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Find nearest prime number less than input number
Find nearest prime number less than input number . For example: if the input number is 125, then the nearest prime number whi...

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Find number of days
The input is two date in string format (dd-mm-yyyy) find out the number of days between these two dates. Example: input: ...

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Food safety
Assign safeTemperature with 1 if foodTemperature is less than 40 or greater than 165.

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How to find the sum of all column vectors of the elements on the kth diagonal of a square matrix in Matlab ?
Here it is the code that does the work. Inspect the function *diag* and partial results at each iteration. n = size(A,1); ...

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Concatenate two strings
Its very easy. Just concatenate two strings.

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Matlab Basics - Rounding II
Write a script to round a variable x to 3 decimal places: e.g. x = 2.3456 --> y = 2.346

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Small aircraft weight limit
Write an if-else statement that evaluates to true if the sum of passengerWeight and cargoWeight is less than or equal maxWeight....

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Generate pi using logarithm
Generate pi using logarithm

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Change the sign of even index entries of the reversed vector
change the signs of the even index entries of the reversed vector example 1 vec = [4 -1 -2 9] ans = [9 2 -1 -4] example2...

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Test if two numbers have the same digits
Given two integers _x1_ and _x2_, return |true| if the numbers written with no leading zeros contain the same digits. That is, t...

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