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𝑦(𝑡) = 1 + 𝑒 ^((𝑡^ 2) /2) how to put in matlab
Hi @Ethan Kirkpatrick t = linspace(-2, 2, 401)'; y = 1 + exp((t.^2)/2); plot(t, y) Try picking some basics in MATLAB Onramp ...

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What is the meaning of this code line? th1(2:NB)=inv(BM(2:NB,2:NB))*P1.';
Hi @shravya boggulapally I think the code means , which solves a system of linear equations, . For more info, please check mld...

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How to I find x in sin(x) = 0.65
Hi @Eric Seinen Not trying to confuse you, but here is the 3rd approach, the Numerical Approach. fun = @(x) sin(x) - 0.65; ...

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How to plot a road along its height.
Hi @Muhammad Qaisar Fahim I guess you want to show something like this. Because the data is dense, it is not recommended to sho...

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Questions about elements in function ode45(@(t,x) x.*(4-x), [0,5], -2:4:6)
Hi @Anna The kind of error message usually implies that the singularity has occured somewhere around s. The analytical solutio...

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Drawing phase plane diagram of a system of 3 coupled odes - MATLAB
Hi @UserCJ I think you should be able to plot the trajectory solution using plot3 after retaining the 3D diagram (quiver3): ho...

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Cover earth surface with square tiles
Hi @I-J Your question is actually unclear. What do you mean by "the efficient method to cover the surface"? Are you looking for...

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I am trying to plot a non- linear equation and everything I try don't seem to work
-- Edited to correct a mistake. Thanks @Torsten. -- Hi @Henson Sooklal The nonlinear equation above is the Colebrook–White equ...

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How to optimize a trigonometric function having 1 or more variables? And find it's graphical representation?
Hi @ashim BANERJEE The surface has singularities at and . So, you can only find the local minumum and maximum points. Here is ...

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I have a gas tank with a hole in it. How do I model the gas pressure in the tank with respect to time.
Hi @Amartya Munot This sounds more like an engineering physics question dealing with Presdure Vessels according to the ASME Cod...

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adding output disturbance to simulink model
Hi @Abdul Hamid Vorajee If the input to the Output Disturbance Transfer Function (ODTF) block is not connected, it will be cons...

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Solving Differential Equations With
Hi @Igor Braz Gonzaga I add a new answer because the pieces of new info were scattered here and there. You should have edited t...

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how to solve a 4 DOF problem with data input force
Hi @LUCA PATRIARCHI Since the earthquake force is externally time-dependent (different step size from the solver), I have creat...

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How to draw square plot in matlab?
Hi @Nilanshu Mahant Here is the basic to draw a square or any rectangular object. The rectangle function will pick a corner at ...

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Calculation of Electric Field for the given two point charges.
Hi @ajskfd Better ask a physics teacher or a physicist to check. The electric field at for the first positive Charge ...

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question related to direction field
Hi @SSBGH The solutions for the initial conditions, , , and are given by , , , respectively. The direction field for ca...

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ode45 code runs indefinitely
Hi @Thomas Laverick The pressure drops rapidly. So, by the time sec. If you look at the 6th equation (dPdw), you will notice...

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Solving Differential Equations With
Hi @Igor Braz Gonzaga If this is an exercise in the Mechanics class, usually will be given. Anyhow, there are generally 3 case...

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How do I get distance between two curves that cannot be described with a polynomial?
Hi @Jacinth Gudetti Here is an example. Say, there are two paths: one is an onion-shaped path and the other is a circular path....

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Help with solving an equation
Hi @Amy Topaz Make a direct substitution of vgs into the equation. upCOX = 125; vtp = -0.15; lambda = -0.01; l = 1; we = 1...

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How to get a close loop transfer function from an open loop one?
Hi @Maaz Madha Assuming that the sensor measures perfectly (), then this is one of the ways: s = tf('s'); G = (13.11*s^3 + 30...

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State Space observer Result
Hi @Hamidou Youness Thanks for adding more info. However, if you are looking for assistance, it is preferred that you share you...

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Solve the system of homogeneous differential equations x1 (t) = 2x1 (t) — 2x2 (t) + x3(t) x2(t)= —x1(t) + 3x2(t) — x3(t) , x3(t) = —2x1(t) — 4x2(t) + 3x3(t) with initial con
Hi @Sandipan Jena Since you didn't copy equations properly (special formatted characters cannot be copied/pasted directly), I...

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my program is not working properly
Hi @shiv gaur It appears that the system is highly unstable and all states blow up at around 0.35 sec except for . Please check...

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Tool to optimize the exact poles for poles replacement method to get a specific state curve of the MIMO system
Hi @WijdanMTAk Maani Takrouri Have you tried tuning the gains (or poles) manually? Doing so may allow you to narrow down the ra...

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How can I solve this: (x-2)*(x+1)^3?
Hi @LUCA GIROTTI It's good to hear that you tried working out something by yourself. You need to create a symbolic variable for...

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how do I write expression for this equation??
Hi @manar zuhair I understand the frustration of a beginner. However, since you didn't provide much info, I can only guess and ...

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I need help in MATLAB code for general tan function with taylor series
Hi @Haseeb Hashim If we are looking at the same source, then you should be able to view this: https://en.wikipedia.org/wiki/...

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how to plot v-t graph for v=v0(e^-kt)?
Hi @현규 강 The method posted by @Davide Masiello is proper. Alternatively, if you want a quick plot to view, then you can do this...

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How do I code this to my transfer function ?
Hi @Jay To represent time delays in linear systems, you can write something like G = tf(1,[1 10],'InputDelay', 4) or G = tf(...

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