
William
Semi-retired physicist with interests in numerical modeling and mathematics.
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Solved
Determine whether a number is prome
In discussing the unique factorization of numbers in Elementary Number Theory, Underwood Dudley devised a new number system: “C...
4 days ago
Solved
Classify water surface profiles
Problem statement Write a function to classify the water surface profile starting at depth in a channel with longitudinal slop...
9 days ago
Solved
Draw '5' in Chinese.
Draw a x-by-x matrix '五' using 1s and 0s. Example: x=5 ans= [1 1 1 1 1 0 1 0 0 0 1 1 1 1 0 0 1 0 1 0 1 1 1 1 1] x=7...
11 days ago
Solved
Compute the critical depth of a channel
Problem statement Write a function to compute the critical depth of a channel with discharge . The unit system will be specifie...
11 days ago
Solved
Remove runs of at least n consecutive NaNs
This problem is inspired by Dyuman Joshi's problem 58329. Given a row vector x and a natural number n, remove all runs of at lea...
12 days ago
Solved
Create an empty array
Suppose you need an empty array. e = [] will give you one, but it's a double array, which may not help if you need a differen...
12 days ago
Solved
Find the circle inscribed in a triangle
Write a function that takes the x- and y-coordinates of three points describing the vertices of a triangle and returns the cente...
12 days ago
Solved
Decode a message encrypted with the square root of 2
Cody Problem 58299 asks you to encrypt a message by changing all letters to uppercase and randomly choosing a position of the AS...
14 days ago
Solved
Continuous NaNs - I
Remove any continuous NaNs that appear in the array - %Example 1 input = [1 NaN 2 NaN NaN 3 NaN NaN NaN] output = [1 NaN 2 ...
14 days ago
Solved
Encrypt a message with the square root of 2
Suppose you want to encrypt the word ‘TWIN’. The ASCII codes for the four letters are 84, 87, 73, and 78. If you consider the fr...
14 days ago
Solved
Compute the normal depth of a channel
For steady uniform flow in a channel of constant cross section and slope, the depth does not change with distance or time. In th...
14 days ago
Solved
Calculate the Voltage Through a Step-Up Transformer
Given a step-up transformer has a primary coil with A number loops, a secondary coil with B number loops, and a primary voltage ...
15 days ago
Solved
Easy Sequences 116: Summation involving nthroot, floor, and ceiling functions
Given a postive integers and , we are asked to evaluate the following summation: ...
23 days ago
Solved
factorial_calc(n)
Write a MATLAB function called factorial_calc(n) that takes a positive integer n as input and calculates the factorial of n. The...
26 days ago
Solved
Easy Sequences 114: Counting Unique Numbers
A Unique Number is defined as a positive integer with no repeated digits. This means that and are unique numbers, but and ar...
29 days ago
Solved
Find the mean of the magic x
Given a x term, find the magic x, then find the mean/average of any one row or column.
29 days ago
Solved
Find circular arc length, sector area and segment area
Given a circular arc passing through the points P = [ x1 y1 ] and Q = [ x2 y2 ] such that the center angle of the arc (in degree...
1 month ago
Solved
CMPSC 200 help(2)
Use this problem to earn some easy points towards your 1,000! Just hit submit. function y = your_fcn_name(x) y = x^2 + 32; e...
1 month ago
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COMPSC 200 help
Use this problem to earn some free points towards your 1,000. Just hit submit! function y = your_fcn_name(x) y = x^2 + 50; e...
1 month ago
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Easy Function(4)
Use the submit button to earn points function y = your_fcn_name(x) y = x^2 + 40; end
1 month ago
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Easy Function(3)
Hit submit for some free points. function y = your_fcn_name(x) y = x^2 + 30; end
1 month ago
Solved
Easy Function(2)
Hit the submit button for some cody points! function y = your_fcn_name(x) y = x^2 + 20; end
1 month ago
Solved
Easy Function(1)
Use this function to earn some cody points! function y = your_fcn_name(x) y = x^2 - 1; end
1 month ago
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Function(4)
Hit submit for some points! function y = your_fcn_name(x) y = x^2 - 4; end
1 month ago
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Function(3)
Use this function to earn some points on your cody journey! function y = your_fcn_name(x) y = x^2 - 12; end
1 month ago
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Function(2)
Use this function to earn a few points. function y = your_fcn_name(x) y = x^2 - 8; end
1 month ago
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Easy Function
Use this function to earn some points (hit submit): function y = your_fcn_name(x) y = x^2 + 10; end
1 month ago
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Functions For Points
Use this fucntion to earn some free points! function y = your_fcn_name(x) y = x^2 + 5; end
1 month ago
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Function(1)
Use this function for some points (free) function y = your_fcn_name(x) y = x^2 + 2; end
1 month ago