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Bruce Raine


2010 以来アクティブ

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.

8年以上 前

問題


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

8年以上 前 | 1 | 86 個のソルバー

解決済み


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...

8年以上 前

解決済み


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...

8年以上 前

問題


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...

8年以上 前 | 1 | 48 個のソルバー

問題


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 ...

8年以上 前 | 1 | 97 個のソルバー

解決済み


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 ...

8年以上 前

問題


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...

8年以上 前 | 2 | 284 個のソルバー

解決済み


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...

8年以上 前

問題


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...

8年以上 前 | 4 | 67 個のソルバー

解決済み


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...

8年以上 前

解決済み


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/...

8年以上 前

解決済み


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

8年以上 前

解決済み


inner product of two vectors
inner product of two vectors

8年以上 前

解決済み


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 ...

8年以上 前

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

8年以上 前

解決済み


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 = ...

8年以上 前

解決済み


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...

8年以上 前

解決済み


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...

8年以上 前

解決済み


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...

8年以上 前

解決済み


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] ...

8年以上 前

解決済み


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

8年以上 前

解決済み


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:*...

8年以上 前

解決済み


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 ...

9年以上 前

解決済み


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

9年以上 前

解決済み


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)).

9年以上 前

解決済み


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

9年以上 前

解決済み


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

9年以上 前

問題


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...

9年以上 前 | 3 | 408 個のソルバー

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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),....

9年以上 前

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