Bruce Raine

Last seen: etwa ein Monat vor | Aktiv seit 2010

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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.

fast 11 Jahre vor

Problem

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

fast 11 Jahre vor | 1 | 91 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...

etwa 11 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...

etwa 11 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...

etwa 11 Jahre vor | 1 | 51 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 ...

etwa 11 Jahre vor | 1 | 259 Lösungsvorschläge

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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 ...

etwa 11 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...

etwa 11 Jahre vor | 2 | 338 Lösungsvorschläge

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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...

etwa 11 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...

etwa 11 Jahre vor | 4 | 76 Lösungsvorschläge

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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...

etwa 11 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/...

etwa 11 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

etwa 11 Jahre vor

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inner product of two vectors
inner product of two vectors

etwa 11 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 ...

etwa 11 Jahre vor

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

mehr als 11 Jahre vor

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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 = ...

mehr als 11 Jahre vor

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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...

mehr als 11 Jahre vor

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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...

mehr als 11 Jahre vor

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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...

mehr als 11 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] ...

mehr als 11 Jahre vor

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

mehr als 11 Jahre vor

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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:*...

mehr als 11 Jahre vor

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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 ...

fast 12 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

fast 12 Jahre vor

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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)).

fast 12 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

fast 12 Jahre vor

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

etwa 12 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...

etwa 12 Jahre vor | 12 | 855 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),....

etwa 12 Jahre vor

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