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Double the next!
Given two numbers, m and n, find a matrix m x n where each element value is twice the value of the previous element. Starting fr...

2 years ago

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Second Diagonal
Transpose the matrix from it's second diagonal.

2 years ago

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Gold Standard
Gold has long been used as currency and a standard for currency, due to its inherent value and rarity. Historical data for gold ...

2 years ago

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Determine the area of square if length of the diagonal is given

2 years ago

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Mean Square Error

2 years ago

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Compound Interest : Future Value
Theorem : Compound Interest where, F : Future value at the end of n periods P : Present value r : Annual nominal rate n :...

2 years ago

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Calculator spelling - Numbers to Letters
Using the numbers on a calculator, and rotating the display 180 degrees, many words can be spelled. In particular, the following...

2 years ago

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Find the index of nth maximum of a row vector of real numbers
Given a vector of real numbers x, find the index idx of _n_ th maximum value. If nth maximum occurs more than once, return the i...

2 years ago

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replace empty matrices with '[]'
for example a=1;a(:,1)=[]; returns a = Empty matrix: 1-by-0 use this as the input,and the output should be '[]...

2 years ago

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Acidity of vinegar and salts
Assuming: pH (potentia hydrogenii) = - log10(H+ ionic concentration in mol/Liter). For a buffer solution containing acetic acid ...

2 years ago

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count upper and lower case characters
In a given input string, count and return the number of upper and lower case characters as u and l respectively. For example:...

2 years ago

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Rule of mixtures (composites) - either bound
The <http://en.wikipedia.org/wiki/Rule_of_mixtures rule of mixtures> is used in the mechanical design of composite structures to...

2 years ago

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string comparision
compare two strings if both are same return 1 else return 0

2 years ago

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Schwarzschild radius
Compute the Schwarzschild radius for objects of mass m (kg). Use c = 299,792.458 km/s and G = 6.6738*10^-11 N*(m/kg)^2. Your fun...

2 years ago

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Total resistance of resistors in series
What is the total resistance of a number of resistors in series? A vector R contains the resistances (in Ohm) of n resistors, w...

2 years ago

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Calculate the volume of the football

2 years ago

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Draw 'P' !!!
Draw a n by n matrix 'P' using 0s and 1s. (n is odd and greater than 4) if n=5 , then the output will be [1 1 1 1 1 1 0 0 0...

2 years ago

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Solve the equation. Find X.

2 years ago

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Check if any duplicates in your data
Given an array x, return a number n equal to the largest number of repetitions in your data. For example: If x=[1 2 3 6 8 4 9]...

2 years ago

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Product of elements in a column

2 years ago

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Under the sea: Snell's law & total internal reflection
<https://en.wikipedia.org/wiki/Snell's_law> When a light travels from one medium to another medium, depending on the refracti...

2 years ago

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For given vectors x,y find coresponding spline coefficients.
For given vectors x,y find coresponding spline coefficients. Example x =[ -3 -2 0 2 3] y =[ 0 0 1 ...

2 years ago

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Raise each element to the power of its index in a matrix
In a matrix, A = [1,2;3,4] raise the power of each element like: 1^1+2^3+3^2+4^4 and add it all to produce the result 274

2 years ago

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Sum of terms in a series 1 (★★★)
Given x and n, compute the following sum: |x|+|x|^(1/2)+|x|^(1/3)+|x|^(1/4)+|x|^(1/5) ... + |x|^(1/n) where ||x|| indica...

2 years ago

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Refresh your system of equations
Given square matrix, and solution vector, find the values of the variables Example: xyz = [1 -1 2; 0 2 5; 4 0 -3]; //x-y+2...

2 years ago

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Interpolate scattered data.
Most data was scattered, and there is no gird. There are three data [c] in three different area [x,y]. x=[1 3 4]; y=[1 ...

2 years ago

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The average of the second largest values
Given a matrix, find the average of the second largest values in each row. The same value does not exist on a row. Example: ...

2 years ago

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Find 0 in array
Given array find where there 0 is.

2 years ago

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Determine the roots of a cubic equation
Given the coefficients a, b, c, and d of a cubic equation, a*x^3 + b*x^2 + c*x + d = 0, determine its roots.

2 years ago

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Determine whether a given point is inside or outside a polygon
A closed polygon may be described by an N x 2 array of nodes, where the last node and the first node are the same. Each row of t...

2 years ago