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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.

presque 2 ans ago | 5 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 + ...

plus de 4 ans 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 ...

plus de 4 ans 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...

plus de 4 ans 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...

plus de 4 ans ago

Solved


Sum of Matrix
Sum of Matrix

plus de 4 ans 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]

plus de 4 ans ago

Solved


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

plus de 5 ans 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 ...

plus de 5 ans ago

Solved


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

plus de 5 ans ago

Solved


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

plus de 5 ans ago

Solved


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

plus de 5 ans ago

Solved


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

plus de 5 ans ago

Solved


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

plus de 5 ans 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...

plus de 5 ans 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...

plus de 5 ans ago

Solved


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

plus de 5 ans ago

Solved


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

plus de 5 ans ago

Solved


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

plus de 5 ans ago

Solved


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]

plus de 5 ans 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: ...

plus de 5 ans 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...

plus de 5 ans ago

Solved


Remove the Zero
Given an array n, remove all zeros

plus de 5 ans ago

Solved


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

plus de 5 ans 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].

plus de 5 ans 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 ...

plus de 5 ans ago

Solved


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

plus de 5 ans 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]

plus de 5 ans 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...

plus de 5 ans ago

Solved


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

plus de 5 ans ago

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