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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....

11 months ago

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Brain Teaser Solver

Write an algorithm to solve this brain teaser: You have a square that is broken into four triangles, the area of three of tho...

11 months ago

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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 ...

12 months ago

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Compute Khinchin's constant

Khinchin's constant K_0 = 2.684542001... (also written "Khintchine's constant") has the amazing property that it is the limiting...

12 months 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....

12 months ago

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Set the Euler-Mascheroni constant with an identity using available MATLAB functions

Cody Problem <https://www.mathworks.com/matlabcentral/cody/problems/42826 42826> asked us to estimate the <https://en.wikipedia....

12 months ago

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Calculate the sum of two polynomials

Calculate the sum of two polynomials if they are written in notation with their coefficients. example: a=[3 4 5]; b=[...

12 months ago

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Power supply: 230V to 115V

The problem is simple: we have a wall outlet which supplies 230V and an apparatus that requires 115V. Software is always chea...

12 months ago

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Mid-term report

You just got your mid-term report, but it's full of ones and twos :(. So before you give it to your parents, you change it, in o...

1 year ago

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Simple Matrix

Make the following matrix without typing it in one by one. [1 2 3; 2 4 6; 4 8 12] x=[1 2 3].

1 year ago

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Problem for beginners

Suppose that x is a column vector, with at least a length of 6. Delete the 2., 6., and the second last row. Example: X=[1;2;3...

1 year ago

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Problem for beginners

M is a nxm matrix. Swap the fist and the second last column with eachother. X=[1 2 3;4 5 6;7 8 9] Y=[2 1 3;5 4 6;8 7 9]

1 year ago

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Stairs

Make an n by n matrix, where the elements are ones and zeros. In the main diagonal, and under that, there should be only ones (...

1 year ago