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Binbin Qi


Last seen: Today

China University of Petroleum

4 342 total contributions since 2009

Professional Interests: Machine Learning/ Math/ Geophysics

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Binbin Qi's Badges

  • Cody 5th Anniversary Finisher
  • Triathlon Participant
  • Scavenger Finisher
  • Knowledgeable Level 2
  • Thankful Level 1
  • First Answer
  • Logic
  • Computational Geometry I Master
  • Matrix Patterns II Master
  • Personal Best Downloads Level 1
  • First Review
  • 5-Star Galaxy Level 1
  • Introduction to MATLAB Master
  • Community Group Solver
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Solved


Award medals to winners

environ 2 heures ago

Solved


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

environ 2 heures ago

Solved


Approximation of an integral - Riemann sum

environ 17 heures ago

Solved


Sort a vector

environ 17 heures ago

Solved


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 ...

1 jour ago

Solved


Evaluate the incomplete elliptic integrals
Elliptic integrals can be used to evaluate integrals whose integrands have the form R(x,sqrt(P(x))), where R(x,y) is a rational ...

1 jour ago

Solved


Decipher the number 2 - 3 keys

2 jours ago

Solved


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

2 jours ago

Solved


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 ...

2 jours ago

Solved


Guess the logic

3 jours 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...

3 jours ago

Solved


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 jours ago

Solved


Optimum Egyptian Fractions
Following problem was inspired by <http://www.mathworks.com/matlabcentral/cody/problems/2126-split-bread-like-the-pharaohs-egypt...

4 jours ago

Solved


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...

4 jours ago

Solved


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

4 jours ago

Solved


List the emirps

4 jours ago

Solved


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 ...

4 jours ago

Solved


Play Outside In with primes

5 jours ago

Solved


Find the position of planet in solarsystem
Write a funtion named *nthplanet* which takes name of the planet as input string and provides the position of the planet, starti...

5 jours ago

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