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How can I solve this problem by using Euler's method?
Mathematically, the solutions look like the following:

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Help with simple nested function
Ciao @Davide Cannavacciuolo If I'm not mistaken, you probably want to plot something like this, right? Once you confirm that, w...

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How to find the Transfer function of a Simulink output plot?
Hi @Atefeh I'm not an expert, but I have friends who are, and one of them said this is possible with this math function: whe...

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How to solve these non-linear equations?
Hi @Samir Thapa If you have the Optimization Toolbox installed, then you can use the 'fsolve' function to solve the system of n...

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Seeking help for find matrix A,B,C, D for a space rappresentation
Hi @Edoardo Moroni. Aha! Now I understand your fundamental issue. Your mathematics teacher should have covered this matrix top...

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Fitting an exponential equation to this data with CFtool
Hi @Stefano Russo The data doesn't show the steady-state value. Nonetheless, we can still try fitting the exponential model to ...

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Having problems with PID Control...
Hi @JAVIER Based on the provided information and without the mathematical model of the robotic arm and the PD controller gains,...

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reinforcement learning will suddenly stop during the training process
HI @嘻嘻 The most common issue that the error message you've encountered in Simulink indicates that there is a "division by zero"...

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ODE45 Output size
Hi @Sneh I think you want to compare the numerical solutions with the analytical solutions. %% Method 1: Numerical Solutions ...

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How do I modify the ball on a beam system to accommodate for Friction?
Hi @Kez If Fr is the friction, and you know the friction formula, then you inject it in this differential equation. I don't ...

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Fisher's z transform with atanh() to rho goes to infinity
Hi @Alba Peris, If you make sure that rho stays in the range , then will be finite. rho = -0.999:0.001:0.999; y = atanh(rho...

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how to make input to the system time variable?
Okay @Min Khant, the problem is incomplete. However, you can learn by yourself using this example for tracking the desired tra...

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GA Algorithm for PID tuning
Hi @SURBHI GOEL Sometimes you can let GA randomly search during the initial run to observe if the performance requirements are ...

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How to keep track of accumulated error for integral term in a PID controller function?
Hi @David This simple example shows how to obtain the integral error signal by adding an auxiliary state in the my_Dynamics() f...

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how to done this simulink , help me to do this i have to make aircraf with simulink
Hi @Nguyen Viet Hoang If you are not familiar with Simulink blocks and need to model the aircraft's longitudinal dynamics in Si...

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How to apply PSO FOR REGRESSION?.
Hi @Ahmed Eltantawi it is technically possible to use PSO for predicting the output, although not by directly applying PSO. The...

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Out of memory - dsolve 3rd order system
Hi @Chris G. If you're using the ode45 solver to find the state responses, here is how they look. Indeed, as mentioned by @Walt...

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how I can fix sample time in ode45
Hi @hossen hassanzadth Are you looking for something like this? T = 0.5; tspan = 0:T:10; y0 = [0.2,0.3]; [t, y]...

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Damped Oscillation Equation Fitting
Hi @Haardhik You can probably estimate the value of omega (angular frequency) by counting the number of zero-crossing events. I...

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How to plot the Taylor Series expansion of sin²(x) in MATLAB
Hi @Abdulazziz I believe you when you say you don't know how to plot this in MATLAB. However, I don't understand the logical re...

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how can I set the decimal digits of all coefficients at one time when outputting a polynomial f?
a = 5.327416; b = 3.660092; c = 1.5799301; fprintf('f(x) = %.3f*x^2 + %.3f*x + %.3f', a, b, c)

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Unable to use Control System Designer
Hi @Oz Etkin Please post the full code because the error message appears to have something to do with logical operations involv...

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Where is the tle file that contain data satellite (eccentricOrbitSatellite.tle) ?
Hello @Eman Adel The file "eccentricOrbitSatellite.tle" can be found in the folder named "orbitdata" if you have the Example fi...

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how do I set membership function to this ANFIS?
Hi @Ahmad In ANFIS training, only the Grid Partitioning method provides the flexibility to assign a fixed number of membership ...

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using mean function to return a singular value of a row vector
Hi Jack, It could be the get_SoilMoisture(Object) function is nested in a for-loop that performs 3 iterations in the Main Scr...

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Calculated 100% rise time value different than matlab value
Hi @Caleb Since and , then % Parameters theta = 1.23; % rad wd = 1.97; % rad % Rise t...

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Sinc Interpolation without using predefined function
Hi @Radu-Andrei Not an interpolation expert, but I believe your code didn't work correctly because the sampling frequency (at 1...

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Piecewise function in Simulink
Hi @Yamana Uno Since the piecewise signal is generated through an If-Else conditional statement in the coding mode, @Ishaan's a...

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Show matrix is not invertible.
Hi @L I believe this is an exercise in the Linear Algebra course. You have likely learned how to find the determinant of a matr...

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how can i plot bifurcation diagram of fractional logistic map?
The logistic map is given by and the code for the graphical representation of the bifurcation may be converted from the Pytho...

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