William

Last seen: 1 day ago

3,656 total contributions since 2012

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Parabolic Partial Differential Equations: Explicit Method

2 days ago

Solved

Construct dimensionless parameters
*Summary* Write a function to construct dimensionless parameters from a list of variables, a matrix indicating their dimensi...

2 days ago

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Evaluate the prime zeta function

3 days ago

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Solve the Challenger puzzle

3 days ago

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Construct a prime circle
A <https://mathworld.wolfram.com/PrimeCircle.html prime circle> is a circular arrangement of the numbers 1 to 2n such that pairs...

3 days ago

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Test approximations of the prime counting function

4 days ago

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Set Soldner's constant

4 days ago

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Evaluate the logarithmic integral
The <https://en.wikipedia.org/wiki/Logarithmic_integral_function logarithmic integral> li(x) plays a role in number theory becau...

4 days ago

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Compute the date of a special marriage milestone

4 days ago

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Rock Paper Scissors Lizard Spock

6 days ago

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Determine the sum of diagonal elements in a matrix excluding negative and NaN values

6 days ago

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Find sum of numbers on the cornice of a matrix.

6 days ago

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Sort in descending order.

6 days ago

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LCM

7 days ago

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GCD

7 days ago

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Identify full reptend primes

7 days ago

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Last Digit of fibonacci number

7 days ago

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Investigate the frequency of last non-zero digits of primorials

7 days ago

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Find the last non-zero digit in a primorial
<https://www.mathworks.com/matlabcentral/cody/groups/2001/problems/45251 Cody Problem 45251> asked us to find the last non-zero ...

9 days ago

Solved

Area of a pentagon
Given the side of a regular pentagon and its apothem return the area of pentagon. Remember the area of pentagon is calculate ...

9 days ago

Solved

Identify primorial primes
Cody Problems <https://www.mathworks.com/matlabcentral/cody/problems/46054-count-trailing-zeros-in-a-primorial 46054> and <https...

9 days ago

Solved

Count trailing zeros in a primorial
<https://www.mathworks.com/matlabcentral/cody/problems/44068-the-number-of-trailing-zero-digit-of-a-factorial Cody Problem 44068...

9 days ago

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Determine the factorial of a number

9 days ago

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Identify Wagstaff primes
The numbers 3, 43, and 2731 are examples of <https://mathworld.wolfram.com/WagstaffPrime.html Wagstaff primes>. Write a func...

24 days 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...

24 days ago

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Solve a Weird Calculator puzzle
The September 2012 issue of GAMES Magazine had a Weird Calculator puzzle by Erich Friedman. In this puzzle, the calculator has o...

1 month ago

Solved

Count alternating permutations
In an alternating permutation of numbers 1 to n, the numbers are arranged so that they alternately increase and decrease. For ex...

1 month ago

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Construct the Seidel-Entringer-Arnold triangle
Several problems in Cody ask us to construct part or all of triangles in which entries follow a pattern. Cody Problems <https://...

1 month ago

Solved

Let's create histogram data by yourself.
We'd like to create histogram data, which first column shows the data, and second column shows the frequency. input = [1, 2, ...

1 month ago

Solved

Find the zeros of the Bessel function of the first kind
<https://mathworld.wolfram.com/BesselFunctionoftheFirstKind.html Bessel functions> are important in many problems in mathematica...

1 month ago