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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...

4 years ago

Solved

Calculate polynomial equation

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

4 years 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.

4 years 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 ...

4 years ago

Solved

How to calculate log?

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

4 years 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...

4 years 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 ...

4 years 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)

4 years 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)^2

4 years 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 ...

4 years ago

Solved

How to check matrix's size?

x=randi(100) y=randi(100) A=zeros(x,y) Can you measure size of matrix A?

4 years 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 ...

4 years 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...

4 years ago

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Check that given number is 3*n

Check that input of multiple of three (3*n). if given number is included in 3*n, print true. (hint: use mod)

4 years 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...

4 years ago

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Analyze observation data

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

4 years 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...

4 years ago

Solved

Calculate using 'for' statements

Equations are easily calculated using matlab. Especially, when we calculate multivariable(more than two) variables, "meshgrid" f...

4 years 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...

4 years ago

Solved

Make random number between a and b

Function rand make arbitrary number between 0 and 1. Using inputs, a, and b, make random number between given two values.

4 years 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 ...

4 years ago

Solved

Weighted moving average

x1=[1 2 1]; y1=[1 2 2 4 5 6 6 8]; Make function for weighted moving average. z(i)=(x1(i)*y1(i)+x1(i+1)*y1(i+1)+x1(i+2)*y1...

4 years 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....

4 years ago