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What's size of TV?

Many people buy TV. Usually they ask about diagonal. But also important are width and height. Let's assume that all TV have rati...

9 months ago

Answered

fsolve problem

You can try with the function solve. For example, to force getting real solutions: syms x eqn = x^5 == 3125; solve(eqn, x) %...

fsolve problem

You can try with the function solve. For example, to force getting real solutions: syms x eqn = x^5 == 3125; solve(eqn, x) %...

9 months ago | 0

Solved

Project Euler: Problem 5, Smallest multiple

2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder. What is the smalle...

9 months ago

Solved

Love triangles

Given a vector of lengths [a b c], determines whether a triangle with non-zero area (in two-dimensional Euclidean space, smarty!...

9 months ago

Solved

Find the area of a triangle

Given a triangle with a base b and height h, return the triangle area.

9 months ago

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Area of a circle

Given the radius x, y would be the area of a circle. Pi = 3.1416

9 months ago

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Replacing a row

For matrix G=[1 2 3; 4 5 6; 7 8 9] Replace the 2nd row with 8s **remember to create matrix G

9 months ago

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Matlab Basics II - Free Fall

An object freely falling from rest under gravity covers a distance x given by: x = 1/2 gt^2 write a function that calculat...

9 months ago

Solved

Ratio between sum of primer numbers and non-prime numbers

Write a function that calculates the ratio between the sum of the prime numbers lower or equal than x, and the sum of the non-pr...

9 months ago

Solved

Ratio between sum of primes and sum of factors

Write a function that calculates the ratio between the sum of primes numbers lower or equal to x, and the sum of the factors of ...

9 months ago

Solved

07 - Common functions and indexing 6

Create a variable _m_ as a magic square with the size 6 x 6 Magic squares are defined as square matrices, where the sum of a...

9 months ago

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Return unique values without sorting

If the input vector A is [42 1 1], the output value B must be the unique values [42 1] The *values of B are in the s...

9 months ago

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Returning a "greater than" vector

Given a vector, v, return a new vector , vNew, containing only values > n. For example: v=[1 2 3 4 5 6] n=3 vNew =...

9 months ago

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Back to basics 7 - Equal NaNs

Covering some basic topics I haven't seen elsewhere on Cody. Given 2 input variables, output true if they are equal, false ot...

9 months ago

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Add 3 numbers

In this problem, you have to add three numbers a, b and c. Give output d = add(a,b,c)

9 months ago

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Test Problem; Create a 5x5 array containing all ones

This is a test for learning the process of creating a Cody problem. The goal of this test problem will be to create an array,...

9 months ago

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Sum of Two Numbers

Given two integer numbers x and y, calculate their sum and put it in z. Examples: Inputs x = 2, y = 4 Output z is 6 ...

9 months ago

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matrix of natural number

Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 resides seially as shown in the examples below. ...

9 months ago

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Sphenic number sequence

<http://oeis.org/A007304 Sphenic numbers> are positive integers that are products of three distinct prime numbers: 30, 42, 66, 7...

9 months ago

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Determine if input is odd or even

Determine if input is odd or even, sample problem

9 months ago

Solved

Calculate the square of a number (Super Easy)

The goal is to calculate the square (y) of a number (x). Good way to start MatLab for beginners.

9 months ago

Problem

Ratio between sum of primes and sum of factors

Write a function that calcualtes the ratio between the sum of primes numbers lower or equal to x, and the sum of the factors of ...

9 months ago | 0

Problem

Ratio between sum of primer numbers and non-prime numbers

Write a function that calculates the ratio between the sum of the prime numbers lower or equal than x, and the sum of the non-pr...

9 months ago | 0

Solved

Sum of a geometric series

Give the sum of the first 'n' terms of a geometric series, given 'a' as the first term and 'r' as the ratio.

9 months ago

Problem

Sum of a geometric series

Give the sum of the first 'n' terms of a geometric series, given 'a' as the first term and 'r' as the ratio.

9 months ago | 0

Problem

Get the value 100

Knowing that 123-45-67+89=100, write a function that gives this result for any order of the digits in the input. Otherwise, the ...

9 months ago | 0