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**Content Feed**

Solved

Which Prime

Given two prime numbers, specify the relation between them i.e. - 'Twin Prime', 'Cousin Prime', 'Sexy Prime' or 'None'

9 dagen ago

Solved

Bessel Polynomials

Return the n-th Bessel polynomial Assume that n is a non-negative finite integer. bessel_poly(0) ans = 1 bessel_poly(1) ...

9 dagen ago

Solved

List Honaker primes

The number 131 is the 32nd prime number. It is a Honaker prime because the sum of its digits (1+3+1) equals the sum of the digit...

9 dagen ago

Solved

Find numbers in the Popular Computing Z-sequence

Here’s a quick one. In 1977 the magazine Popular Computing sought “problem situations for which the computer is the best (if not...

13 dagen ago

Solved

Gallery function, learning

write a Function, edit something or Add something that give us like the following for random n: n=2 ans= [ 0 1 ...

16 dagen ago

Solved

Radioisotope Thermoelectric Generator (RTG)

Given an isotope's atomic mass (in amu), half-life (in years(a) or days(d)), and average kinetic energy absorbed (of emitted dec...

20 dagen ago

Solved

Convert Two Character String into a Binary Vector

Given a string "XOXXO" convert it into a binary vector. [1 0 1 1 0] Paul Berglund implemented an optimal method in <http://ww...

22 dagen ago

Solved

List the nth prime quartet prefix

Prime numbers larger than 5 can end only in 1, 3, 7, or 9, but of course not all numbers ending in these four digits are prime. ...

22 dagen ago

Solved

Convert Thermocouple output voltage (in mV) to Temperature (in C)

Convert Thermocouples of types (B,E,J,K,N,R,S,T) output junction voltage (in mV) to temperature (in C) using NIST coefficients r...

26 dagen ago

Solved

Compute the fractional derivative

Cody Problem 1370 asks us to compute the derivative of a polynomial. This problem extends that idea to fractional derivatives, w...

27 dagen ago

Solved

Pick the die most likely to win

After discussing Rock, Paper, Scissors, Lizard, Spock in The Simpsons and their Mathematical Secrets, Simon Singh writes that in...

27 dagen ago

Solved

Compute the sum of reciprocals of quadratics

Write a function to compute the following sum: See also Cody Problem 46000.

27 dagen ago

Solved

Compute a sum involving the totient over divisors of a number

Write a function to compute the following sum: where is the totient function. The sum is computed over the divisors of (inc...

ongeveer een maand ago

Solved

Nuclear Binding Energy

Compute the approximate nuclear binding energy in MeV using the least-squares fit of the semi-emirical mass formula. Round to th...

ongeveer een maand ago

Solved

Compute the effective conductivity of a heterogeneous aquifer

Slow flow through soil or another porous medium follows Darcy’s law, which relates the flow of water to the gradient in piezome...

ongeveer een maand ago

Solved

Sum the elements in rows of the Levine triangle

The Levine triangle starts as follows: Row 0: 2 Row 1: 1 1 Row 2: 1 2 Row 3: 1 1 2 To construct each row, r...

ongeveer een maand ago

Solved

Identify Ruth-Aaron numbers

After Hank Aaron hit his 715th home run and passed Babe Ruth’s total of 714, Carl Pomerance noticed that the union of the prime ...

ongeveer een maand ago

Solved

Compute a sum of Ramanujan

Srinivasa Ramanujan defined the following function: Write a function to compute for various values of . See also Cody Proble...

ongeveer 2 maanden ago

Solved

Find the smallest integer m such that n divides m!

Write a function that takes an integer and finds the smallest integer whose factorial is divisible by . For example, if , then...

ongeveer 2 maanden ago

Solved

Determine when snow started

R.P. Agnew posed the following problem: It starts snowing in the morning and continues steadily throughout the day. A snowplow t...

ongeveer 2 maanden ago

Solved

Count unique orderings of vertices of a polygon

Cody Problem 2671 asks us to determine whether four points can be the corners of a rectangle. The points are not necessarily inp...

ongeveer 2 maanden ago

Solved

Solve an ODE: equation C

Write a function to solve the following ordinary differential equation: with and . The parameter is a constant. The functi...

2 maanden ago

Solved

Hexagonal Tiling Dots in a Circle

Return how many <http://en.wikipedia.org/wiki/Hexagonal_grid Hexagonal Tiling> grid points there are inside a circle of radius _...

2 maanden ago

Solved

Shifted Hexagonal Tiling Dots in a Circle

Return how many <http://en.wikipedia.org/wiki/Hexagonal_grid Hexagonal Tiling> grid points there are inside a circle of radius _...

2 maanden ago