Solved

Replace secondary diagonal elements of a square array
Replace all the secondary diagonal elements of the square array A with the number n Example: A = [1 2 3 4 5 6 ...

8 years ago

Solved

Sum of combinations
Input: *X = 40*, *Y = [40 20 10 4]* Output: *Z = [1 0 0 0; 0 2 0 0; 0 1 2 0; 0 1 1 3; 0 1 0 5; 0 0 4 0; 0 0 3 3; 0 0 2 5; 0 ...

8 years ago

Problem

Sum of combinations
Input: *X = 40*, *Y = [40 20 10 4]* Output: *Z = [1 0 0 0; 0 2 0 0; 0 1 2 0; 0 1 1 3; 0 1 0 5; 0 0 4 0; 0 0 3 3; 0 0 2 5; 0 ...

8 years ago | 1 | 17 solvers

Solved

Determine whether the number is multiple of 3 or not
Let a=6 and as 6 = 2*3 which means 6 is multiple of 3; return true if a is multiple of 3,otherwise false.

8 years ago

Solved

number of groups
In a classroom, *n* students work on a special project and the other students work in groups of five. If there are 18 students i...

8 years ago

Solved

Area of a Square
Inside a square is a circle with radius r. What is the area of the square?

8 years ago

Solved

Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

8 years ago

Solved

Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

8 years ago

Solved

Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

8 years ago

Solved

Determinants
Given a square matrix(A), find the determinant(d). For example: A = [1,3;4,5] d = 1*5-4*3 = -7

8 years ago

Solved

Find the minimal value in N*N Matrix
Suppose that we have N by N matrix, we try to find the minimal value in that matrix. examples: Input A=[1 2 3 5 6;52 58 56 45...

8 years ago

Solved

Is matlab fun?
Returns 'yes' no matter the input.

8 years ago

Submitted

Represented a positive integer number as a sum of multiple positive integer numbers.
A positive integer number N is represented as a sum of K positive integer numbers.

9 years ago | 1 download |

5.0 / 5

Question

Which method is faster?
1) a(1,2).last_index=a(1,2).last_index+1; a(1,2).multiple_vars(a(1,2).last_index) = value1; 2) a(1,2).multiple_v...

9 years ago | 1 answer | 0

1

answer

Solved

create a square matrix
create a [n*n] matrix. example: mat(4)= [ 1 4 9 16 4 4 9 16 9 9 ...

9 years ago

Solved

Circle area using pi
Given a circle's radius, compute the circle's area. Use the built-in mathematical constant pi.

9 years ago

Question

How to draw special figures like this:
<<http://www.teach-ict.com/gcse_computing/ocr/213_software/utilities/miniweb/images/harddisk.jpg>> Suppose i have 3(N) boolea...

9 years ago | 1 answer | 0

1

answer

Answered
Can anyone help me with the PID tuning using #Particle Swarm Optomization for Load Frequency Control of 3 area system??
start with <http://www.mathworks.com/matlabcentral/fileexchange/43541-particle-swarm-optimization--pso- THIS>

9 years ago | 0

Answered
I am in the need of your help regarding implementation of PSO MATLAB code for a two area interconnected power system for LOAD FREQUENCY CONTROL.
start with <http://www.mathworks.com/matlabcentral/fileexchange/43541-particle-swarm-optimization--pso- THIS>

9 years ago | 0

Answered
I am working on control of nonlinear inverted pendulum using PID and LQR.Now i want to apply PSO on PID .How PSO toolbox can use in this problem or if anybody have coding please answer
start with <http://www.mathworks.com/matlabcentral/fileexchange/43541-particle-swarm-optimization--pso- here>

9 years ago | 0

Solved

Replace values out of an interval with the lower or upper values
For a vector or matrix X and an interval [n1,n2], the function replace every element of x inferior to n1 by n1, and every elemen...

9 years ago

Question

strfind first occurrence.
http://in.mathworks.com/help/matlab/ref/strfind.html#btvz00e-2_1 str = 'Find the starting indices of a pattern in a character...

9 years ago | 1 answer | 1

1

answer

Solved

Crunch that matrix!
You are given an M x N matrix. Write a script that will compress this matrix into an M x (N/3) matrix, where each of the terms ...

9 years ago

Solved

Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

9 years ago

Problem

generate number in particular way
A = [1 5 2 7]; MAX = 10; generate a array Y = [1 2 2 2 2 2 3 3 4 4]; i.e. total eleme...

9 years ago | 1 | 112 solvers

Problem

Detect pair of equal values in a Matrix
A 2D matrix of 2 rows and N columns with random integer numbers. A = [3 1 2 4 6 6 7; 7 3 2 1 5 2 4] ...

9 years ago | 2 | 71 solvers

Question

How many times this for loop will execute
count =0; for i=1:5 count = count +1; if true i=i+1; end end I want to skip som...

9 years ago | 1 answer | 0

1

answer

Solved

Eliminate Outliers Using Interquartile Range
Given a vector with your "data" find the outliers and remove them. To determine whether data contains an outlier: # Identi...

10 years ago

Solved

Give prime Numbers upto n
You are given a input number x; print all the prime numbers less than equal to x.

10 years ago

Solved

Repeat string n times - 2
This is the two variable version of <http://www.mathworks.com/matlabcentral/cody/problems/42482-repeat-string-n-times Repeat str...

10 years ago