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Solved

Avengers Assemble!

Given matrix with so many zeroes, trim those zeroes and output a matrix joining all nnz elements Example: input = [0 0 0 0 0...

11 hours ago

Solved

Rule of mixtures (composites) - lower and upper bounds

The <http://en.wikipedia.org/wiki/Rule_of_mixtures rule of mixtures> is used in the mechanical design of composite structures to...

12 hours ago

Solved

Rule of mixtures (composites) - lower and upper bounds (volumes)

The <http://en.wikipedia.org/wiki/Rule_of_mixtures rule of mixtures> is used in the mechanical design of composite structures to...

12 hours ago

Solved

Rule of mixtures (composites) - upper bound

The <http://en.wikipedia.org/wiki/Rule_of_mixtures rule of mixtures> is used in the mechanical design of composite structures to...

12 hours ago

Solved

Rule of mixtures (composites) - lower bound

The <http://en.wikipedia.org/wiki/Rule_of_mixtures rule of mixtures> is used in the mechanical design of composite structures to...

12 hours ago

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Positive Definiteness of a Matrix

Determine if input matrix is positive definite or not.

12 hours ago

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Coefficients and vertex of a parabola given 3 points

Given 3 points, each defined by x and y, compute the coefficients: [a,b,c] of a parabola with equation: y = ax^2 + bx + c passin...

17 hours ago

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Mean ignoring NaNs

Define a function that behaves in the same way as mean(x) and mean(x,d) except that it ignores NaNs (unless all of the values be...

18 hours ago

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Compute circular convolution

In signal processing, we usually encounter the circular convolution case. Compute it here using the two input sequences (denoted...

1 day ago

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Determine whether a number is a cluster prime

A <https://mathworld.wolfram.com/ClusterPrime.html cluster prime> is an odd prime number _p_ such that all even numbers less tha...

2 days ago

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Find the coefficients for numerical integration using Simpson's rule

For using numerical integration using Simpson's rule, we need some coefficients to be determined first. Suppose the n is the nu...

3 days ago

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Find the first N zeros of the 666 function

Using the following definition of the 666 function for this problem: _f(n)=sin('nnn')-cos(n*n*n)_, write a function that returns...

3 days ago

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Composite Trapezoidal Rule for Numeric Integration

Use the trapezoidal rule to numerically integrate a function, _f(x)_, passed as the first argument, between upper and lower limi...

3 days ago

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Divisible by n, prime vs. composite divisors

In general, there are two types of divisibility checks; the first involves composite divisors and the second prime divisors, inc...

3 days ago

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Divisible by n, prime divisors (including powers)

For this problem, you will be provided an array of numbers (not necessarily in order). Return the array of numbers with only pri...

3 days ago

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Perl 4: unshift

_This is part of a series of perl function which were very helpful for many perl programmers. Could you implement it in Matlab?_...

4 days ago

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Sum the Infinite Series II

For any x in the range 0 < x and x < 2*pi radians, find the sum of the following infinite series: c = 1 + 1/2*cos(x) + 1/2*3/4...

4 days ago

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How many unique Pythagorean triples?

For a given integer |n|, return all <https://en.wikipedia.org/wiki/Pythagorean_triple Pythagorean triples> that inlude numbers s...

5 days ago

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Counting the Grand Primes

A grand prime pair is a pair of primes, p1 and p2=p1+1000, such that both numbers are prime. Like a twin prime pair, where the d...

5 days ago

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It's going down. We're finding simbers!

This problem is inspired by Project Euler 520: Simbers. "We define a simber to be a positive integer in which any odd digit, ...

5 days ago

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Last non-zero digit

Given a number n, find the last non-zero digit of the factorial of that number. You need to take care of the large values of n....

5 days ago

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Polar Form Complex Number Entry

Write a function that takes the magnitude and angle(in degrees) of a complex number and returns a complex variable. Positive ang...

5 days ago

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Hilbert numbers

Given a positive integer, n, return h as follows: 1. If n is not a <https://en.wikipedia.org/wiki/Hilbert_number Hilbert numb...

5 days ago

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Luhn's Algorithm

Luhn's Algorithm is used as a checksum for credit card numbers or similar identifiers. It can detect single-digit changes and sw...

6 days ago

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generate a matrix of Legendre polynomials

input = x - the degree of the polynomial output = matrix of Legendre polynomials

6 days ago

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Lah Numbers

Create a square lower diagonal matrix containing the first n Lah number coefficients. In mathematics, the Lah numbers are coeffi...

6 days ago

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Laguerre Polynomial

Create a square lower diagonal matrix containing the first n Laguerre Polynomial coefficients. For n=6, the Laguerre Matrix is: ...

6 days ago