Answered
"Invalid use of operator." doesn't go even after trying various solutions :(
Why nor just use Matlab's inbuilt cart2pol function?

5 maanden ago | 0

Answered
Heat equation using Boundary condition
function statements of this form (i.e. functions eq1, initial and ba) need to go at the end of the script, not the start.

6 maanden ago | 0

Answered
A for loop that will run until a specific mathematical value is found
You could try replacing the "for i = 2:10 " loop by something like nports = 1; while Q(i)<Qdesired nports = nports ...

6 maanden ago | 0

| accepted

Answered
How to plot all figures in only one plot?
Here's one simple way: x=-pi:0.1:pi; c=-6:5; figure hold on for i=1:length(c) y=c(i)*x.^(2)+4*x+2; plot(x,y) end...

7 maanden ago | 0

| accepted

Answered
Error in Hermite Polynomial
In line for j = 0:i-1 you have j starting at zero. Matlab's indices start at 1, so the following line should have X(j+1) not ...

7 maanden ago | 0

Answered
Matlab code not computing
The use of square brackets in the scatter function is not the only problem! Are you looking for something like this? p=-1; z=...

8 maanden ago | 0

| accepted

Answered
how to plot the path of circular beam oscillation welding?
Like this? A=1; f=50; vf=0.02; time = linspace(0,100,500); x0 = vf*time; theta = 2*pi*f*time; x=A*cos(theta)+x0; y=A*sin...

9 maanden ago | 0

Answered
how to change the direction of the airfoil
Change contourf(real(J),imag(J),imag(f),v2); %%%%% fill(real(zair),imag(zair),'k') to contourf(-real(J),imag(J),imag(f),v2);...

9 maanden ago | 0

| accepted

Answered
How to use 5 function coupled each other using ODE45? it is possible?
Better like this: MM0 = [10, 0, 0, 0, 0]; tspan = [0 100]; [t, MM] = ode15s(@mymode, tspan,MM0); M1 = MM(:,1); M2 = MM(:...

9 maanden ago | 0

| accepted

Answered
convert a column matrix with many rows into multiple column of equal rows
Try the reshape function.

9 maanden ago | 0

Answered
"Not enough Imput arguments" ERROR
You haven't included J as an input argument to function Feedback_Ven_STEP.

10 maanden ago | 0

| accepted

Answered
Using polyfit in two arrays to detrend data.
polyfit just returns the coefficients of the polynomial. You need to use them in polyval to calculate data values.

10 maanden ago | 2

Answered
Implicit solution using pdepe 1D advection diffusion reaction equation
I think you've overcomplicated the situation! Should be more like the following (which you should check very carefully, as I di...

10 maanden ago | 0

Answered
I want to plot the vector field on F=x i+ j
Do you mean like this? [x,y] = meshgrid(-3:.15:3,-3:.15:3); Fx = x; Fy = ones(size(y)); %%%%%%%%%%% figure; quiver(x,y,Fx,F...

10 maanden ago | 0

| accepted

Answered
i have two set of data for temperature measurements which vary depends on each other. the variation may be divided into three portions. how can we seperate these portions
Here's a possible way (assumes the data is already in the workspace): dT2 = gradient(T2); minval = min(dT2(Time<2.5)); ix = f...

10 maanden ago | 0

Answered
How to surf very small values keeping the same ratio?
Multiply them all by 1e4.

10 maanden ago | 0

Answered
whats preventing my code from generating the proper results
I don't know anythng about the physics of your scenario, but are you sure you are calculating NLOS_LOWER_BOUND correctly? The f...

10 maanden ago | 0

Answered
Finding the optimal solution for a data with two variables
Here's a possible approach (I've used relative errors as the values of the two columns are an order of magnitude different): % ...

10 maanden ago | 0

| accepted

Answered
Using loop to sum value of an array and summation
Here's one way: J=[1 2 3 4 5 6 1 2 3 4 5 6]; step = 3; ix = 1:step:numel(J); for i = 1:numel(ix) p(i) = sum(J(ix(i)...

10 maanden ago | 1

| accepted

Answered
Solving a system of inequalities using an eigenfunction and if, else.
Your function needs to be more like this, for example. Set values of x outside the function, call the function with these value...

10 maanden ago | 0

| accepted

Answered
Почему появилась ошибка?
Seems overcomplicated for a numerical solution! How about simply f = @(x) x - 5 - 1/3*cos(2*x+1) + 2*x./(2+x.^2); g = @(x) x ...

10 maanden ago | 0

Answered
How to write 2D heat conduction exact solution for Inf n?
Your term sinh(n*pi*x/L) should be sin(n*pi*x/L). See the following code (which can be made more efficient!): L = 1; H = 2; ...

10 maanden ago | 1

| accepted

Answered
Help with Riccati equation
You haven't defined B (in the function definition)

10 maanden ago | 0

Answered
How to create a time function and make a line rotate at a certain angular speed?
Do you mean something like this? r2_length = 2; tend = 10; % s dt = 0.1; t = 0:dt:tend; omega = 1; % rad/s theta = omega*t...

10 maanden ago | 0

Answered
Cannot get integral function to work for two limits
Try this %Enthalpy datum conditions (Kelvin) Ti=(25+273.15); %Input temperature (Kelvin) T1=(183+273.15); %Output tem...

10 maanden ago | 0

Answered
I have some errors in executing the following code, can anyone help me please?
You have no initial guesses for y(5) and y(7). And what about y(6)?

11 maanden ago | 0

Answered
How can I plot a diagram with 12-15 different colors
Specify the colors with RGB triplets. doc Color

11 maanden ago | 0

Answered
This code give me an error of Index exceeds array bounds.
More like this? m=60; g=9.81; k=80; m_2=10; m_1=15; h=100; w=15; t=1:10:100; x = zeros(1,numel(t)); for i=1:numel(t) ...

11 maanden ago | 0

Answered
Why does MATLAB grader refuses to get my answer with the double integral evaluation problem?
As follows Oops! I did the sum incorrectly! Should have been like this: % box side length delta = 0.01; % mid box points...

11 maanden ago | 0

Load more