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Circle area using pi
Given a circle's radius, compute the circle's area. Use the built-in mathematical constant pi.

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How to find the position of an element in a vector without using the find function
Write a function posX=findPosition(x,y) where x is a vector and y is the number that you are searching for. Examples: fin...

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Create a row array using double colon operator
Create a row array from 9 to 1, using the double colon operator.

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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...

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multiply by three
Given the variable x as your input, multiply it by 3 and put the result equal to y. Examples: Input x = 2 Output y is ...

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Replace every 3rd element in a vector with 4
x is a vector of undetermined length You are to replace every 3rd element with the number 4, example: x = [11 23 34 43 2 3...

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Multiplying Vectors 101
Make a vector from 1 to x then multiply the sum of that vector by 2.

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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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Vector
Create a 1 x 10 vector from 1 to 20 with increments of 2

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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.

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Chess probability
The difference in the ratings between two players serves as a predictor of the outcome of a match (the <http://en.wikipedia.org/...

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Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

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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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Create a vector
Create a vector from 0 to n by intervals of 2.

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Compute LOG(1+X) in natural log
Compute LOG(1+X) in natural log

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Find out Harmonic mean.
Find out Harmonic mean.

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Test Driven Solution - Probability Problem 3
*Problem:* Without any Cody cheats, write code that passes the test suite. *Hint:* The test suite gets samples from the proba...

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Test Driven Solution - Probability Problem 2
*Problem:* Without any Cody cheats, write code that passes the test suite. *Hint:* The test suite gets samples from the proba...

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Test Driven Solution - Probability Problem 1
*Problem:* Without any Cody cheats, write code that passes the test suite. *Hint:* The test suite gets samples from the proba...

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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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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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Signal Processing Basic - 1. Stretch a signal
Input vector V is a discrete time signal assuming the first sample is sampled at t=0. This signal has to be stretched in time. ...

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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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Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

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First N Perfect Squares
*Description* Return the first N perfect squares *Example* input = 4; output = [ 1 4 9 16 ];

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Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

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Return fibonacci sequence do not use loop and condition version 2
Calculate the nth Fibonacci number,return sequence Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... ...

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Return fibonacci sequence do not use loop and condition
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: ...

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Two-output anonymous function?
Return a function handle that when applied to an input, it produces two outputs: the first is the same as the input, and the sec...

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