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# Mitchell Thurston

Last seen: 5 mesi ago Active since 2020

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How can I obtain the derivative of a vector? Displacement-Velocity but what about acceleration? I am using the space state formulation
(Altered the code provided so that it ran properly) clc; %command window clear;%clear workspace close all; % close figures ...

5 mesi ago | 1

| accepted

trouble coding for ODE's
this is definintely an inefficient way of doing it, but this accomplishes everything syms dx(t) x(t) m c k w % these are the te...

5 mesi ago | 1

How can I 'hold off' specific Field vector using "quiver" into a updated "drawnown" inside a plot?
I'm assuming you're calling quiver in the "quiver(x,y,u,v)" style, since you can't use 1 argument % After plot 1 is made hol...

5 mesi ago | 1

How to add regression line equation to a plot?
the most simple way I know of would be to add it to the legend you can add this to the last line of your code legend({'Data Po...

5 mesi ago | 1

Solved

Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

6 mesi ago

Solved

Rotate a Matrix by 90 degrees
Rotate a Matrix by 90 degrees Example: If the input is: X = 1 2 3 4 5 6 7 8 9 ...

6 mesi ago

Solved

Project Euler: Problem 1, Multiples of 3 and 5
If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23...

6 mesi ago

Solved

Vector creation
Create a vector using square brackets going from 1 to the given value x in steps on 1. Hint: use increment.

6 mesi ago

Solved

Doubling elements in a vector
Given the vector A, return B in which all numbers in A are doubling. So for: A = [ 1 5 8 ] then B = [ 1 1 5 ...

6 mesi ago

Solved

Create a vector
Create a vector from 0 to n by intervals of 2.

6 mesi ago

Solved

Flip the vector from right to left
Flip the vector from right to left. Examples x=[1:5], then y=[5 4 3 2 1] x=[1 4 6], then y=[6 4 1]; Request not ...

6 mesi ago

Solved

Whether the input is vector?
Given the input x, return 1 if x is vector or else 0.

6 mesi ago

Solved

Find max
Find the maximum value of a given vector or matrix.

6 mesi ago

Solved

Get the length of a given vector
Given a vector x, the output y should equal the length of x.

6 mesi ago

Solved

Inner product of two vectors
Find the inner product of two vectors.

6 mesi ago

Solved

Arrange Vector in descending order
If x=[0,3,4,2,1] then y=[4,3,2,1,0]

6 mesi ago

solve function can't solve an inequality
I'm able to get a solution with defining k as a real symbolic variable syms k real ineqs = [0 < 320/9 - k/9, 0 < (9*k + (k/9...

7 mesi ago | 2

| accepted

For loop circles that wrap around another circle
Modified the calculation of alfa, R, and a slight change with the for loop clear; r=1; % small circles radius n=17; %number...

7 mesi ago | 0

| accepted

I wan to create a 3x3 matrix and this matrix needs to contains first 3 raws and last 3 columns of other matrix which is unknown.
With the original larger matrix you want the rows and columns from being "A" and the resulting 3x3 being "B", A = B(1:3, ... ...

7 mesi ago | 0

Solved

Is my wife right?
Regardless of input, output the string 'yes'.

oltre un anno ago

Solved

Find the maximum number of decimal places in a set of numbers
Given a vector or matrix of values, calculate the maximum number of decimal places within the input. Trailing zeros do not coun...

oltre un anno ago

Solved

Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

oltre un anno ago

Solved

Magic is simple (for beginners)
Determine for a magic square of order n, the magic sum m. For example m=15 for a magic square of order 3.

oltre un anno ago

Solved

Make a random, non-repeating vector.
This is a basic MATLAB operation. It is for instructional purposes. --- If you want to get a random permutation of integer...

oltre un anno ago

Solved

Roll the Dice!
*Description* Return two random integers between 1 and 6, inclusive, to simulate rolling 2 dice. *Example* [x1,x2] =...

oltre un anno ago

Solved

Number of 1s in a binary string
Find the number of 1s in the given binary string. Example. If the input string is '1100101', the output is 4. If the input stri...

oltre un anno ago

Solved

Return the first and last character of a string
Return the first and last character of a string, concatenated together. If there is only one character in the string, the functi...

oltre un anno ago

Solved

Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

oltre un anno ago

Solved

Getting the indices from a vector
This is a basic MATLAB operation. It is for instructional purposes. --- You may already know how to <http://www.mathworks....

oltre un anno 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...

oltre un anno ago