Bruce Raine

Last seen: 8 months 前 | 自 2010 起处于活动状态

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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.

11 years 前

问题

Frobenius Norm
Write your own version of Frobenius Norm without using the 'norm' function.

11 years 前 | 1 | 93 个解题者

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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...

11 years 前

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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...

11 years 前

问题

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...

11 years 前 | 1 | 53 个解题者

问题

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 ...

11 years 前 | 2 | 301 个解题者

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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 ...

11 years 前

问题

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...

12 years 前 | 3 | 347 个解题者

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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...

12 years 前

问题

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...

12 years 前 | 4 | 77 个解题者

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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...

12 years 前

已解决

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/...

12 years 前

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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

12 years 前

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inner product of two vectors
inner product of two vectors

12 years 前

已解决

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 ...

12 years 前

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radius of a spherical planet
you just measured its surface area, that is the input.

12 years 前

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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 = ...

12 years 前

已解决

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...

12 years 前

已解决

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...

12 years 前

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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...

12 years 前

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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] ...

12 years 前

已解决

Will there be a new leader?
Simply answer the title.

12 years 前

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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:*...

12 years 前

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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 ...

12 years 前

已解决

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

12 years 前

已解决

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)).

12 years 前

已解决

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

12 years 前

已解决

Whether the input is vector?
Given the input x, return 1 if x is vector or else 0.

12 years 前

问题

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...

12 years 前 | 13 | 939 个解题者

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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),....

12 years 前

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Bruce Raine

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