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...

10 years ago

Solved


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

10 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.

10 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 ...

10 years ago

Solved


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

10 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...

10 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 ...

10 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)

10 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

10 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 ...

10 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?

10 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 ...

10 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...

10 years ago

Solved


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)

10 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...

10 years 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 ...

10 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...

10 years ago

Solved


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

10 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...

10 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.

10 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 ...

10 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...

10 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....

10 years ago