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# Duane Hanselman

### University of Maine

288 total contributions since 2012

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

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

mer än 2 år 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 + ...

ungefär 5 år 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 ...

ungefär 5 år 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...

ungefär 5 år 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...

ungefär 5 år ago

Solved

Sum of Matrix
Sum of Matrix

ungefär 5 år ago

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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]

ungefär 5 år ago

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

nästan 6 år 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 ...

nästan 6 år ago

Solved

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

nästan 6 år ago

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

nästan 6 år ago

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

nästan 6 år ago

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

nästan 6 år ago

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

nästan 6 år 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...

nästan 6 år 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...

nästan 6 år ago

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

nästan 6 år ago

Solved

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

ungefär 6 år ago

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

ungefär 6 år 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]

ungefär 6 år 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: ...

ungefär 6 år 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...

ungefär 6 år ago

Solved

Remove the Zero
Given an array n, remove all zeros

ungefär 6 år ago

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

ungefär 6 år 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].

ungefär 6 år 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 ...

ungefär 6 år ago

Solved

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

ungefär 6 år 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]

ungefär 6 år 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...

ungefär 6 år ago

Solved

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

ungefär 6 år ago