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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...

10 years ago

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Calculate 3D Distance
Given 2 vectors (1st is initial position, 2nd is the destination) calculate the distance in 3D Example in1 = [0 0 0] in2...

10 years ago

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Can we make a triangle?
Given three positive number, check whether a triangle can be made with these sides length or not. remember that in a triangle su...

10 years ago

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Extract area
There are observed data c and its location (x,y) x=1:0.1:10 y=1:0.1:10 [x,y]=meshgrid(x,y) c=x.^2+y.^2 Extract data c i...

10 years ago

Solved

Find peaks
x=0:0.1:10 y=exp(-0.7*(x-2).^2)+0.5*exp(-0.7*(x-7).^2) There are two peaks.(try plot(x,y)) Make code for finding peaks'...

10 years ago

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tridiagonal matrix
Given vectors u and v, make a tri-diagonal symmetric matrix such that u is in the main diagonal and v is below and above diagona...

10 years ago

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check string
display any string

10 years ago

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Create square matrix from submatrices.
Create square matrix from 4 submatrices, where n-size of submatrices, x1,x2,x3,x4 given values, first submatrix has x1 value on ...

10 years ago

Solved

Calculate area of sector
A=function(r,seta) r is radius of sector, seta is angle of sector, and A is its area.

10 years ago

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Calculate circle's property
[A R]=function(r) r is radius, A is area of circles, R is circumference.

10 years ago

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Change coordinate from Cartesian to spherical coordinates.
[x,y,z] -> [t,p,r] [x,y,z] is a point in the Cartesian coordinates. change its coordinate to spherical (t,p,r), t is azimuth,...

10 years ago

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Vectors multiplication.
Multiply two vectors x transposed and y.Example x = [1 2 3 4 5 6 7 8 9 10 ] y = [ 1 2 ...

10 years ago

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Calculate inverse matrix in square matrix
A=eye(3) Calculate inverse matrix of given input. B=function(A) ans = 1 0 0 0 1 0 ...

10 years ago

Solved

Pointwise multiplication of vectors.
Pointwise multiplication of vectors x and y. Example x= [1 3 5 7 9 11 13 15 17 19] y=[ 1 4...

10 years ago

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Sum positive elements of matrix.
Calculate sum of positive elements of the matrix.

10 years ago

Solved

Set x value to each even index of vector y.
Set x value to each even index of vector y.

10 years ago

Solved

Calculate temperature of object
An object that have initial temperature T0 is in a room that has temperature Ts. The object's temperature in time t is T=Ts+(...

10 years ago

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Calculate triangle's hypotenuse
There are 634 eggs. A box can take 18 eggs. How many boxes are needed? Input is number of eggs and output is number of needed...

10 years ago

Solved

Calculate triangle's hypotenuse
There are 634 eggs. A box can take 18 eggs. How many boxes are needed? Input is number of eggs and output is number of needed...

10 years ago

Solved

Change matrix to vector2
From x = 4 3 5 1 5 1 To y = 4 3 5 1 ...

10 years ago

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Create given matrix
y = 0 0 1 1 0 0 0 0 1 1 0 0 1 1 1 1 1 1 ...

10 years ago

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Сoncatenate two strings.
Сoncatenate two strings. Example s1='Hello' s2='world' result='Hello world'

10 years ago

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Display positive elements of matrix.
Display positive elements of matrix.

10 years ago

Solved

Compare two strings.
Compare two strings, whether they are equal or not.

10 years ago

Solved

Select primes from the matrix.
Select primes from the matrix.

10 years ago

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Expand a term
Given a term, as a string, expand it. e. g. f = '2(x + y)';

10 years ago

Solved

x&u are two vectors then Y=x+u???
x&u are two vectors then Y=x+u???

10 years ago

Solved

Сoncatenate two strings into one
Concatenate two strings, become one strings Example: s1 = 'Hello' s2 = 'world' result = "Hello world "

10 years ago

Solved

Count given word x in text.
Count how many times given word x repeats in text.

10 years ago

Solved

Solve expression II
Solve given expression. alpha=0.1(-x-y-50)/(exp((-x-y-50)/10)-1) beta=5exp((-x+y-60)/20) result=alpha+beta;

10 years ago