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Back to the Future III
Marty McFly and Doc Brown are "back" again. See the test suite to see what they are up to.

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SatCom #10: Rate of Precesion of Orbit Plane (Nodal Precession)
Satellite and Space Engineering - Problem #10 This is part of a series of problems looking at topics in satellite and space com...

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SatCom #9: Overall Link Performance
Satellite and Space Engineering - Problem #9 This is part of a series of problems looking at topics in satellite and space comm...

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SatCom #8: Satellite Link Budget
Satellite and Space Engineering - Problem #8 This is part of a series of problems looking at topics in satellite and space comm...

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tetration
About tetration.

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Check if the input is an interprime

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Check if the input is a balanced prime

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Check if the input is a strong prime

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Decipher the number 2 - 3 keys

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decipher the number 1 - same key for all digits :)
You will be given a input number (eg) x=12345 you have to figure out the dechiper key and match it with given input and deciph...

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Easy Sequences 12: 50th Prime
Write a function that outputs the th prime after a given number . For example, the th prime after is . NOTE: If itself is pr...

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Easy Sequences 11: Factorial Digits without Trailing Zeros
Here is an easy one... It is not difficult to count the number of digits of the factorial of a given number. For example for 'n...

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Easy Sequences 10: Sum of Cumsums of Fibonacci Sequence
The function F(n) is defined as the set of Fibonacci numbers from the first up to the n-th. S(n) is the result of applying to F,...

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Easy Sequences 9: Faithful Pairs
A "faithful number" is a non-prime number that is one less or one more than some prime number but not both. For example, for num...

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Is the number of 1s in a binary integer odd or even?
Your function should turn the input integers into binary form and count the number of 1s in the binary. If the number is odd, re...

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Round up to π

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Just square the input
Square the number

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Easy Sequences 7: Easy as Composite Pi
The prime Pi function is defined as the number of prime numbers from 1 to a certain given limit. In MATLAB, it is easy to create...

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Easy Sequences 6: Coefficient sums of derivatives
Consider the polynomial function and its first-order derivative . The sums of the coefficients of P and P', are and , respecti...

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Easy Sequences 5: Project Euler Problem 1 - Again!
We are all familiar with Project Euler Problem 1. This time let's try it on bigger multiples and larger range. Find the sum of ...

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Monte Carlo integration: area of a polygon
The area of a polygon (or any plane shape) can be evaluated by <https://www.mathworks.com/matlabcentral/cody/problems/179 Monte ...

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Siren frequency and Doppler effect.
The Doppler effect is described on OpenStax University Physics at https://openstax.org/books/university-physics-volume-1/pages/1...

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Rotate matrix by coloumns

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Easy Sequences 4: Eliminate the Days of Confusion
If a date is written in purely numeric format some dates can be confusing, if we don't know the date format used. For example, "...

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Easy Sequences 3: Prime 44-number Squares
The positive integers 62 and 238 are related. Their squares (3844 and 56,644) both end in '44'. In fact, 62 and 238 are the 3rd ...

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List numbers that are not squares
The numbers 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 17, etc. are not perfect squares. Write a function to list the th term in ...

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A sequence of Ones
You are given number(s) with all digits - 1. Your answer will depend on the count of 1 in the given number, for example - x1...

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Original coordinate of the min element of a subset of elements

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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...

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Caesar Cipher
Given a input word x and a shift n, encrypt the word with caesar cipher of shift n.

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