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qaez


31 total contributions since 2016

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Make 3d matrix from other matrix
A=[1 1;2 2]; B=[2 2;3 3]; C=[0 0;1 3]; Using given three matrix, make 3 dimensional matrix [D] by stacking.

mehr als 4 Jahre ago

Solved


Removing vibration!
There are [y] that vary with [x] but y including small useless vibration. x=1:10 y=[1.71 2.03 3.28 4.05 5.10 6.82 7.69 8.3...

mehr als 4 Jahre ago

Solved


Make random permutation
Make random permutation that consist of random number from 1 to n.

mehr als 4 Jahre ago

Solved


Calculate z=x^2+y^2
There are z in (x,y). x=1:10;y=1:10 [x y]=meshgrid(x,y) Calculate x^2+y^2.

mehr als 4 Jahre ago

Solved


Calculate cross product
Make function for cross product a=[1 3 2]; b=[2 4 1]; y=function(a,b) y=[-5 3 -2]

mehr als 4 Jahre ago

Solved


Solve the system of linear equations
4x - 2y +6z=8 2x + 8y +2z=4 6x + 10y +3z=0 Find x,y,z. Output should be a=[x;y;z].

mehr als 4 Jahre ago

Solved


Extract a part of matrix!
There is matrix A A=[1 2 3; 4 5 6; 7 8 9] Extract a part of matrix A from (2,2) to (3,3). Result should...

mehr als 4 Jahre ago

Solved


Calculate polynomial equation
Calculate this equation using given x 1+x+x^2+x^3+....x^99 (hint: use polyval)

mehr als 4 Jahre ago

Solved


Delete useless part of data
When someone deals with big data. if the person delete useless part, calculation will be more faster than before deleting. De...

mehr als 4 Jahre ago

Solved


Sort matrix a according to ascending order of B!
To be specific, A=[9 3 1 3] B=[1 3 2 4] are provided, ascending sorting of B is [B(1) B(3) B(2) B(4)]. Thus ...

mehr als 4 Jahre ago

Solved


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

mehr als 4 Jahre ago

Solved


Check given number is odd or even
Using input [x], check given number is odd or even if x is odd, output should be true.

mehr als 4 Jahre ago

Solved


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...

mehr als 4 Jahre 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.

mehr als 4 Jahre ago

Solved


Calculate RMSE
RMSE(Root Mean Square Error) is widely used to calculate error. Calculate RMSE between [a] and [b] a=[1 2 3 4] b=[0 1 2 ...

mehr als 4 Jahre ago

Solved


Analyze observation data
There are results of observation. A B C -------------------------- t=1 2.2 2.6 2.4 t=2 2.4 ...

mehr als 4 Jahre ago

Solved


Calculate inverse matrix in m by n matrix
x=(1:10)' y=roundn(2*x+7*rand(size(x)),-1) a*x=y Estimate a using inverse matrix calculation. This is principle of li...

mehr als 4 Jahre ago

Solved


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 ...

mehr als 4 Jahre ago

Solved


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 ...

mehr als 4 Jahre ago

Solved


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

mehr als 4 Jahre ago

Solved


Calculate numerical integration.
x=0:0.01:1 y=x.^2 Calculate area from x=0 to x=1, and y=0 to y=x^2 using numerical integration. (hint: trapz)

mehr als 4 Jahre ago

Solved


Calculate correlation.
There are two data. y1=[0 1 2 3 4]' y2=[2 3 4 5 6]' We can see positive relationship between y1 and y2. The relations...

mehr als 4 Jahre ago

Solved


Make sorting matrix without sort function.
It is very valuable for student to simple sorting program because they learn about use of loop and if-statement. Sort given inpu...

mehr als 4 Jahre ago

Solved


Calculate representive values (max. min. std)
A B C -------------------------- t=1 2.2 2.6 2.4 t=2 2.4 2.8 2.2 t=3 2.6 2.7 2....

mehr als 4 Jahre ago

Solved


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

mehr als 4 Jahre ago

Solved


How to calculate log?
There is a log that have base 5. How to calculate? log5(x)?

mehr als 4 Jahre ago

Solved


Two dimensional moving average
A=[1 2 3 4 5 1 2 2 2 3 2 3 3 3 4 1 1 4 4 2] B=[1 1;1 1]; % This is can be used for weight factor of moving a...

mehr als 4 Jahre ago

Solved


Make roundn function
Make roundn function. x=0.55555 y=function(x,1) y=1 y=function(x,2) y=0.6 y=function(x,3) y=0.56 ...

mehr als 4 Jahre ago

Solved


Change matrix to vector
Vector is a matrix whose size is 1 x n or n x 1. Change matrix to vector. x = 4 3 5 1 ...

mehr als 4 Jahre ago

Solved


Calculate some equation
Using given inputs x and z, make two outputs that are y1 = (xz)/(x/z)^2 + 14x^2 - 0.8z^2 y2 = x^z - z^x + (x/z)^2 - (z/x...

mehr als 4 Jahre ago

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