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**Content Feed**

Solved

Crunch that matrix!

You are given an M x N matrix. Write a script that will compress this matrix into an M x (N/3) matrix, where each of the terms ...

2 months ago

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Fill the matrix - 1

Input is a column vector and n. n columns will be added to the left of the input column. The first value of the row is the s...

2 months ago

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Compound Interest: Interest Rate

Theorem : Compound Interest where, F : Future value at the end of n periods P : Present value r : Annual nominal rate n :...

2 months ago

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Get Next Combination

Return next combination For example three-element combinations of 1:5 1 2 3 1 2 4 1 ...

2 months ago

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Lunar Arithmetic (Multiplication)

<https://oeis.org/A087061 OEIS link for a description of lunar arithmetic> Simply take the larger digit when adding and take ...

2 months ago

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Ordinary Annuity : Periodic Payment (Present Value)

Theorem : Present Value of an Ordinary Annuity where; P : Present value of all payments A : Periodic payment r : Interest ...

2 months ago

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Ordinary Annuity : Present Value

Theorem : Present Value of an Ordinary Annuity where; P : Present value of all payments A : Periodic payment r : Interest ...

2 months ago

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Sum Rows

Sum the same indexed (unique) rows. Examine the test suite. Related Challenge - <http://www.mathworks.com/matlabcentral/cody/...

2 months ago

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Find MPG of Lightest Cars

The file |cars.mat| contains a table named |cars| with variables |Model|, |MPG|, |Horsepower|, |Weight|, and |Acceleration| for ...

2 months ago

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Solving a quadratic equation

Given a, b and c, Return the solution of the following quadratic equation: a*x^2 + b*x + c = 0.

2 months ago

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Fun Race

* Given two unary functions foo and goo. * Check whether foo(0) runs faster than goo(0). * Output 1 if foo is faster, otherwis...

2 months ago

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polar inertia

given locations of a set of unit masses on complex plane, find polar moment of inerta about the origin. for example output 4 if ...

2 months ago

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Size of this cup?

The given vector has diameter of the cup in mm sampled at micrometer increments in depth from top to bottom, need output in cc a...

2 months ago

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swap sign sum & multiply castles

* It is an easy problem, if you know the answer. * Given a square matrix of NxN ordinary numbers. * Initially place N identi...

2 months ago

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Pernicious Anniversary Problem

Since Cody is 5 years old, it's pernicious. A <http://rosettacode.org/wiki/Pernicious_numbers Pernicious number> is an integer w...

2 months ago

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Concatenate a successive power matrix in a column matrix

Generate F = [M1 M^2 ... M^p] with M a matrix, without using for.

2 months ago

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Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4

Example: in = magic(5) in = 17 24 1 8 15 23 5 7 14 16 4 6 13 20 ...

2 months ago

Solved

Find the elements of a matrix according to a defined property.

From A = [5,2,3] and B = [1,2,3,4,5,6,7,8,9,10] produce a vector C where : C(1) is the sum of the first A(1) elements of B, ...

2 months ago

Solved

Area under the curve

Compute area under the curve specified by points stored in y, where y is in range (0,inf) and x time step is 1. note: please r...

2 months ago

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Volume of Cylinder

Compute the Circumference of a Cylinder given it's radius and height.Here x is the radius and y is the height

2 months ago

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calculate the tangent of angle in radians

Calculate the tangent of angle in degrees

2 months ago

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Check capital letters

Check if each first letter of a string is a capital letter. for example: 'This Is Ok' gives a true answer and 'This Is not Ok' ...

2 months ago

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Add the even numbers

Add only the even numbers of x example: x = [1 2 3 4 5] the positive numbers are: 2 4, so their sum is 6

2 months ago

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Remove multiples of N

in the vector x remove all multiples of N. x = [1 2 3 4 5 6]; N = 2; Then y = [1 3 5];

2 months ago

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Add the positive numbers

Add only the positive numbers of x example: x = [-2 -1 0 1 2 3] the positive numbers are: 1 2 3, so their sum is 6

2 months ago

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Count the numbers

In a array x, count the number of times the number n appears in x. for example: x = [1 2 3 4 3 2 1 2] and n = 2 the answer sh...

2 months ago

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Counting votes

x is a vector of votes, e.g. x=[1 2 3 2 2 1 3 2 1 2 2 2 2], who is the winner? 1,2,3?

2 months ago

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Add the odd numbers

Add only the odd numbers of x example: x = [1 2 3 4 5] the positive numbers are: 1 3 5, so their sum is 9

2 months ago