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David Hill


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Answered
Are there any functions that will return the index of the last string in a cell of strings?
find(ismember(cell,'a'),1,'last');

ungefär 3 timmar ago | 1

| accepted

Answered
Symbolic solution to a system of equations
syms a; [1,-1;2,-1]\[a;0];

ungefär 3 timmar ago | 0

Answered
How can I add a column of data to a matrix
A1=[A1;b1];

ungefär 4 timmar ago | 0

Answered
How do I call a script inside a function?
Why not just use functions? I only use scripts when I am working in the workspace. Unless you are going to call a function more ...

ungefär 9 timmar ago | 0

Answered
Applying a string of user inputs within a while-loop
Recommend breaking while loop with if statement: while 1 angle=input(['Enter the angle of trajectory [degrees] : ']); ...

ungefär 19 timmar ago | 0

Answered
Matrix dimensions must agree
Several problems I have noticed: a = 0.4; f = 10^6; w = 2*pi*f;%scalar no need for . I0 = 1; b = (0.4/2); mu0 = 4 * pi * 1...

ungefär 22 timmar ago | 0

Answered
Sorting a large 3 column data set
If I understand you correctly, can you not just subtract off a constant from both x and y coordinates to reset them to where you...

ungefär 23 timmar ago | 0

| accepted

Answered
How can i get the trigonometric function of cos and sin of a variable
Why are the users not entering numbers instead of character arrays? T1 = input('Introduce the value of Theta for row 1 = ');

ungefär 23 timmar ago | 0

Answered
The kinetic energy of a moving car object is KE=1/2mv^2
function energy = KE(m,v) energy= %put your code here end

ungefär 23 timmar ago | 0

| accepted

Answered
Functions and For Loops For Polynomials
Too bad you can't use polyval(). This might get you started. function e=evalPoly(p,a) x=1; e=0; for k=1:length(p) e=e+p...

ungefär 23 timmar ago | 0

Answered
consider preallocating for speed
No for-loop needed. No preallocation needed here. theta_2=1:360; th_2=theta_2*pi/180;%you could use cosd() and not need to con...

2 dagar ago | 0

Answered
How would I divide a 206x1 double it into 5 equal sections and average the values
I am not exactly sure what you mean. If you have matrix (M -206x1) and you want to find the mean of different groupings, then: ...

2 dagar ago | 0

Solved


Pandigital Factors (Based on Euler 491)
A Pandigital Number is a number containing all of the digits from 0-9 inclusive, with the added stipulation that it does not hav...

2 dagar ago

Solved


Bouncy numbers
Inspired by Project Euler n°112. * * Working from left-to-right if no digit is exceeded by the digit to its left it is call...

2 dagar ago

Answered
Sum of series with a variable
I always like to look at what I am doing before solving. Numerially, it should be relatively easy to find the root. alpha = 0.5...

3 dagar ago | 0

| accepted

Answered
how can i convert the content of a character array to a variable name
Generally, you should not do what you are trying to do. One possible solution is to use a struct. xx='Helo'; myStruct.(xx)=mag...

3 dagar ago | 0

| accepted

Answered
loop function help please
x=-10:10; for k=1:length(x) if x(k)<0 f(k)=3*x^2+5*x-7; else f(k)=3*x+4; end end

3 dagar ago | 0

Answered
n number of 2x2 matricies to diagonal matrix
n = input('Input the number of elements:'); k = ((E * avg_area)/L); k_global=diag([k,repmat(k+k,1,n-1),k])+diag(repmat(-k,1,n...

3 dagar ago | 0

| accepted

Solved


Pandigital number n°3 (Inspired by Project Euler 32)
After Problem 2319 and 2320. An n-digit number is pandigital if it makes use of all the digits 1 to n exactly ONCE. For examp...

4 dagar ago

Answered
For Loop Which Skips Numbers Based on Row Vector
n=1:1000;%not sure how far you want your for-loop to go (max(rowVector)+?) n=n(~ismember(n,rowVector)); for k=n %or 1:length(n...

6 dagar ago | 0

| accepted

Solved


Find 10's complement
Find 10's complement of a given number. An example is <http://electrical4u.com/9s-complement-and-10s-complement/ shown here>.

7 dagar ago

Solved


Change the first and last diagonal element of the identity matrix to zero
Starting with the identity matrix, change first and last diagonal element to zero. Example If n=5 A = 0 0 ...

7 dagar ago

Solved


Append two matrix as shown below example
Append two matrix as shown below example A=[1 2; 3 4] and B=[5 6;7 8] Answer must be 1 2 5 6 3...

7 dagar ago

Solved


Add two different item as shown in example
Add two different item as shown in example x=5; y='ab'; Then output must be'5ab';

7 dagar ago

Solved


Convert number from given base to other base
Convert number from given base to other base. Example 400 in base 5, find equivalent number in base 8, it is 144.

7 dagar ago

Solved


Compute LOG(1+X) in natural log
Compute LOG(1+X) in natural log

7 dagar ago

Solved


Converter temp 0 to 200 degree C to 4 to 20mA
Converter temp 0 to 200 degree C to 4 to 20mA (It is used in transmitter)

7 dagar ago

Solved


MATLAB Basic: rounding IV
Do rounding towards plus infinity. Example: -8.8, answer -8 +8.1 answer 9 +8.50 answer 9

7 dagar ago

Solved


Create vector as shown in test cases
Create vector as shown in test cases

7 dagar ago

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