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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.

casi 2 años 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 + ...

más de 4 años 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 ...

más de 4 años ago

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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...

más de 4 años ago

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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...

más de 4 años ago

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Sum of Matrix
Sum of Matrix

más de 4 años 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]

más de 4 años ago

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

más de 5 años ago

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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 ...

más de 5 años ago

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

más de 5 años 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

más de 5 años ago

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

más de 5 años ago

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

más de 5 años ago

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

más de 5 años ago

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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...

más de 5 años ago

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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...

más de 5 años 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.

más de 5 años ago

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

más de 5 años ago

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

más de 5 años 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]

más de 5 años ago

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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: ...

más de 5 años ago

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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...

más de 5 años ago

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Remove the Zero
Given an array n, remove all zeros

más de 5 años 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]

más de 5 años ago

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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].

más de 5 años ago

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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 ...

más de 5 años ago

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

más de 5 años ago

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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]

más de 5 años 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...

más de 5 años ago

Solved

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

más de 5 años ago

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