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An Ohm's Law Calculator

*BACKGROUND / MOTIVATION:* Many important observations in math and science can be described by short, but powerful, equations...

3 years ago

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Compute the perimeter of an ellipse

While the area of an ellipse is straightforward to compute, the perimeter (or circumference) is more complicated. The perimeter ...

3 years 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...

3 years ago

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Determine digits of the Copeland-Erdos constant

<https://www.mathworks.com/matlabcentral/cody/problems/1477-champernowne-constant/solutions/new Cody Problem 1477> asks us to de...

3 years 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 ...

3 years ago

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Identify primorial primes

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

3 years ago

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Compute the harmonic numbers

The nth <https://mathworld.wolfram.com/HarmonicNumber.html harmonic number> is defined as the sum of the reciprocals of the inte...

3 years ago

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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...

3 years 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...

3 years ago

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Investigate the frequency of last digits of prime numbers

The last digit of a prime number greater than 5 can be 1, 3, 7, or 9. If the primes are distributed randomly, then these digits ...

3 years ago

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Compute the nth Pythagorean prime

Pythagorean primes have the form p = 4n+1, where n is an integer, and they can be written as the sum of squares of two integers....

3 years ago