Bruce Raine
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I like to solve most kinds of maths problems that I come across. I have used MATLAB for around 7 years and really enjoy programming it to solve maths and statistics problems. I hold a Masters degree entitled: Master of Computing and Mathematical Sciences (Hons). Professional Interests: Maths and Programming
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Frobenius Norm
Write your own version of Frobenius Norm without using the 'norm' function.
mehr als 12 Jahre vor
Problem
Frobenius Norm
Write your own version of Frobenius Norm without using the 'norm' function.
mehr als 12 Jahre vor | 1 | 97 Lösungsvorschläge
Gelöst
Simple date to serial no. conversion
Convert a date string to a serial date number. For example if you take x='19-May-2001' then the result is 730990 x...
fast 13 Jahre vor
Gelöst
Find the definite integral of various linear functions
A definite integral had a minimum and maximum limit. When you solve this type of problem you must use both quad and the trapz fu...
fast 13 Jahre vor
Problem
Find the definite integral of various linear functions
A definite integral had a minimum and maximum limit. When you solve this type of problem you must use both quad and the trapz fu...
fast 13 Jahre vor | 1 | 60 Lösungsvorschläge
Problem
How long do each of the stages of the rocket take to burn?
A space rocket has 3 stages: - stage 1, s1; - stage 2, s2; - stage 3, s3. If s1 burns 3 x as long as s2 which burns ...
fast 13 Jahre vor | 6 | 444 Lösungsvorschläge
Gelöst
How long do each of the stages of the rocket take to burn?
A space rocket has 3 stages: - stage 1, s1; - stage 2, s2; - stage 3, s3. If s1 burns 3 x as long as s2 which burns ...
fast 13 Jahre vor
Problem
Find the nearest integer
Given a vector of integers and a real number find the closest integer. EX: >> a = [2 4 5 6 8 10]; >> b = 4.6; >> nea...
fast 13 Jahre vor | 3 | 365 Lösungsvorschläge
Gelöst
Find the nearest integer
Given a vector of integers and a real number find the closest integer. EX: >> a = [2 4 5 6 8 10]; >> b = 4.6; >> nea...
fast 13 Jahre vor
Problem
How many days does the cat take to climb out of the hole?
A cat accidentally falls down a hole with sloping but rough sides. It can climb out of the hole of height h metres, but for ever...
fast 13 Jahre vor | 4 | 82 Lösungsvorschläge
Gelöst
How many days does the cat take to climb out of the hole?
A cat accidentally falls down a hole with sloping but rough sides. It can climb out of the hole of height h metres, but for ever...
fast 13 Jahre vor
Gelöst
Penny flipping - calculate winning probability (easy)
Two players are playing a fair penny flipping game. For each flip, the winner adds one penny from the loser's collection to his/...
fast 13 Jahre vor
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Sorted highest to lowest?
Return 1 if the input is sorted from highest to lowest, 0 if not. Example: 1:7 -> 0 [7 5 2] -> 1
fast 13 Jahre vor
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Bottles of beer
Given an input number representing the number of bottles of beer on the wall, output how many are left if you take one down and ...
fast 13 Jahre vor
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radius of a spherical planet
you just measured its surface area, that is the input.
etwa 13 Jahre vor
Gelöst
Swap the input arguments
Write a two-input, two-output function that swaps its two input arguments. For example: [q,r] = swap(5,10) returns q = ...
etwa 13 Jahre vor
Gelöst
Multiply a column by a row
* Given a column vector C and and a row vector R. * Output a matrix M. * Every column of M equals to C multiplied by correspon...
etwa 13 Jahre vor
Gelöst
Distance walked 1D
Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...
etwa 13 Jahre vor
Gelöst
Extract leading non-zero digit
<http://en.wikipedia.org/wiki/Benford%27s_law Benford's Law> states that the distribution of leading digits is not random. This...
etwa 13 Jahre vor
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Replace multiples of 5 with NaN
It is required to replace all values in a vector that are multiples of 5 with NaN. Example: input: x = [1 2 5 12 10 7] ...
etwa 13 Jahre vor
Gelöst
The Answer to Life, the Universe, and Everything
A variation of a previous Hitchhiker's Guide to the Galaxy problem. *Inputs:* Life, the Universe, and Everything *Output:*...
etwa 13 Jahre vor
Gelöst
Rotate a Matrix by 90 degrees
Rotate a Matrix by 90 degrees Example: If the input is: X = 1 2 3 4 5 6 7 8 9 ...
mehr als 13 Jahre vor
Gelöst
Convert from Base 10 to base 5
Convert the input number from base 10 into base 5: for example: if a(in base 10)= 5 then a(in base 5)= 10
mehr als 13 Jahre vor
Gelöst
Matrix indexing with two vectors of indices
Given a matrix M and two index vectors a and b, return a row vector x where x(i) = M(a(i),b(i)).
mehr als 13 Jahre vor
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Compute a dot product of two vectors x and y
x and y are input vectors, d is a number and contains their dot product
mehr als 13 Jahre vor
Gelöst
Whether the input is vector?
Given the input x, return 1 if x is vector or else 0.
fast 14 Jahre vor
Problem
Is A the inverse of B?
Given a matrix A and a matrix B, is A the inverse of B? >>A=[2,4;3,5]; >>B=[-2.5,2;1.5,-1]; >>isInverse...
fast 14 Jahre vor | 15 | 1298 Lösungsvorschläge
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Sum of first n terms of a harmonic progression
Given inputs a, d and n, return the sum of the first n terms of the harmonic progression a, a/(1+d), a/(1+2d), a/(1+3d),....
fast 14 Jahre vor
