Duane Hanselman

University of Maine

288 total contributions since 2012

Electrical Engineering professor. Coauthor of the "Mastering MATLAB" book series.

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Submitted

PIDSEARCH
Search for optimum PD, PI, and PID parameters using fminsearch.

2 years ago | 4 downloads |

Solved

Sum the squares of numbers from 1 to n
For a given value of n return the sum of square of numbers from 1 to n. Example For n = 2 then sum of squares = 5 (1^2 + ...

5 years ago

Solved

Polynomial Evaluation
Create a routine that takes a list of coefficients of a polynomial in order of increasing powers of x; together with a value of ...

5 years ago

Solved

multiple of nine?
Given a positive number n, return true if n is a multiple of 9 and false if not. Do not make the division and do not use functio...

5 years ago

Solved

prime to each other
Given two integers n1, n2 greater than 1, find out if they have common divisors or are prime to each other. Return "true" if the...

5 years ago

Solved

Sum of Matrix
Sum of Matrix

5 years ago

Solved

Get all corner elements from a matrix where dimension of matrix is always equal to or greater than 2.
if a given matrix a = [1 2 3;4 5 6]; so answer is going to be [1 3;4 6]

5 years ago

Solved

How to make y half of x
Making y equal to x/2.

6 years ago

Solved

Find the product of a Vector
How would you find the product of the vector [1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0] times 2?; x = [1 : 0.5 : 6]; y ...

6 years ago

Solved

y equals x divided by 2
function y = x/2

6 years ago

Solved

Skip by a multiple
Given an integer create an array of its multiples. Array must have a length of 15

6 years ago

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Array of Ones
Create a 100 X 100 array of ones.

6 years ago

Solved

Is It a Palindrome?
Given a string or array, determine if it is a palindrome.

6 years ago

Solved

sum of the first 10 odd numbers
y = sum(first_10_odd_numbers)

6 years ago

Solved

Cumulative product of a vector
Cumulative product of a vector example x=[1 2 5 10], then answer must be [ 1 2 10 100] *If you like this prob...

6 years ago

Solved

Print the largest eigenvalue of A(500)
Write a function that prints the largest eigenvalue of A(500), without any extraneous output. For a positive integer n, let A...

6 years ago

Solved

Find the rank of a matrix
Determine the rank of a matrix without using the MATLAB function of the same name.

6 years ago

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Array resizing: Removing elements
* Remove elements 2, 4, and 6 from row array pendingTasks

6 years ago

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Constructing column arrays
* Construct a column array elevatorStops with values 2, 4, 5, 9, and 10

6 years ago

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Union of two set decreasing order
Union of two set decreasing order Say, x=[1 2 5] and y=[5 7 8] then answer must be [8 7 5 2 1]

6 years ago

Solved

Beginner's Problem - Squaring
Try out this test problem first. Given the variable x as your input, square it by two and put the result in y. Examples: ...

6 years ago

Solved

Determinant without using det()
Given a square matrix A, compute the <http://en.wikipedia.org/wiki/Determinant determinant> of A. Note that you may not use t...

6 years ago

Solved

Remove the Zero
Given an array n, remove all zeros

6 years ago

Solved

Remove and Sort
Given a randomized array n, sort it and remove all odd integers. n=5 y = [2 4]

6 years ago

Solved

Remove the positive integers.
Given array,x, remove all the positive numbers and display ouput as y. Example x=[1 -2 3 -4] , output is y=[-2 -4].

6 years ago

Solved

Evaluate Polynomial
Given a polynomial equation coefficients in a vector p, you have to return its value at x. Example: For inputs p and x ...

6 years ago

Solved

Polynomial Multiplication
Multiply two polynomial equation.Given polynomial coefficients a and b.

6 years ago

Solved

Hard limit function
Classify x data as if x>=0 then y=1 if x<0 then y=0 Example x = [ -2 -1 0 1 2] y = [ 0 0 1 1 1]

6 years ago

Solved

Find supported functions
Given a function name, return true if that function is supported by the toolboxes that are installed with MATLAB on this machine...

6 years ago

Solved

Reverse a matrix
Its simple. You have to reverse a given matrix.

6 years ago