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numerical integration and solving for limit
Here is the maximum value you can insert for t: syms x f = 1/sqrt((1-x^2)+0.01/2*(1-x^4)); vpaintegral(f,x,-1,1) And here is...

4 years ago | 0

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errors on function vs time plot
t = linspace(-1,1,100); v = 12*exp(-8*t).*(t>=0); plot(t,v)

4 years ago | 0

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Why doesn't my plot "go to infitnity"?
What finite y value do you want -inf to be in the plot ? Since nobody knows, MATLAB just skips these data points (same for NaN...

4 years ago | 1

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How can I resolve this issue here, can anyone please help.
k1 is a vector. Thus with the commands dAdt(i) = dAdt(i) + k1.*yita_mn(i,j).*(At(j))*cos(Ot(j)-Ot(i)); dOdt(i) = dOdt(i) + k1....

4 years ago | 0

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Double-check for any mistakes
- rho + gamma*(abar(t-1,1) - a(t-1,1)) - gamma*(a(t-1,1) - c(t-1,1)) - delta - (delta*a(t-1,1) + abar(t-1,1)*g_abar - gamma*(aba...

4 years ago | 0

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Answered
2nd order lineair non-homogenous differential equation with EULER not working properly
The number of steps to take to reach tend is (tend-tstart)/dT, not tend/dT. Further, you apply the initial conditions at t = -3...

4 years ago | 1

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Solution of the equation
This code doesn't work since there does not seem to be a solution for some or all of the d values you supplied. I suggest you f...

4 years ago | 0

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ans = Empty sym: 0-by-1 error in solving equation
syms x y Y = 0:1:100; avd=5; s = 0.25; paco2=40; r= 0.8; hb=14; pb=740; eqn = ((hb*(((((pb-47)*y-paco2/r).^3+150*((pb-47...

4 years ago | 0

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Numerical integration of second moment of area for given data
x and y data describe the curves of the upper and lower profile ? https://math.stackexchange.com/questions/3126310/calculating-...

4 years ago | 0

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Delete 0's in a matrix
% First case (see above) A = [0,0;0,0;800,1096;0,1461;1462,1701]; A( any(~A,2), : ) = []; A % Second case (see above) A = [...

4 years ago | 1

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Answered
Methods used inside "roots" and "solve" functions to solve polynomial equations.
For numerial computation of polynomial roots, see https://math.mit.edu/~edelman/publications/polynomial_roots.pdf https://de.m...

4 years ago | 0

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add spesified value on array
x = 8e6 + 2e6*rand(1,1000) value = 3e5; x(x>9e6) = x(x>9e6) + value; x

4 years ago | 0

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Answered
How do I remove the Ans from the result
How do I remove the Ans from the result By correctly coding the if-clause: Alpha = [1,0]; if Alpha(1,1) == 1 disp('Ok') e...

4 years ago | 0

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How to solve Phase Change Stefan problem with the PDEtool?
There is no chance to solve the problem with a standard tool to solve partial differential equations (like the PDE Toolbox). I ...

4 years ago | 0

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Plotting a 4D graph with the fourth dimension using color (a 3D graph with the fourth dimension represented using colors)
Use "slice". This will display R0 on predefined planes in 3d space.

4 years ago | 1

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Solve a multiobjective optimization problem by problem-based approach in Matlab2021a
% teste_multiobjective file x1 = optimvar('x1','LowerBound',0); x2 = optimvar('x2','LowerBound',0); s1 = 5*x1 + 2.5*x2 >=...

4 years ago | 0

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Plotting the function by the points that need to be determined
%% initial conditions global d k0 h_bar ksi m E; Ef = 2.77*10^3; Kb = physconst('boltzmann'); % 1.38*10^(-23) T = 0.12:0.24...

4 years ago | 0

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How to find the maximum value of the power and its position on the time axis (x,y)?
s=1.25; t1=0:0.01:pi/2; t2=pi/2:0.01:pi; t=[t1 t2]; p1= 4*(sin(2*t1)).^2.*exp(-t1/s).^2 + 2; p2= 4*(sin(2*t2)).^2.*exp(-t2/...

4 years ago | 1

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How to plot these three fucntion X,S and P in one graph with lines
t=0:0.5:14; X0=0.036; Xm=2.24; u0=1.14; S0=41.44; Ms=1.56; Yxs=0.37; Ypx=0.958; dt=0.90; X=(X0*Xm*exp(u0*t))./(Xm-X0+...

4 years ago | 0

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How to make 'for loop' for three variables (i,j,n)?
for i=1:m-1 instead of for i=2:m-1

4 years ago | 0

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goodness of fit data for a fit
Statistical information about the goodness of fit can be obtained by using "fit" instead of "lsqcurvefit" and the second output ...

4 years ago | 0

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why plot not generate for the following codes?
creation = 1; syms n alpha = sym(0.03); ketalpha1 = symsum(exp(-abs(alpha)^2 * alpha^n / sqrt(factorial(n)) ), n, 0, 10); ...

4 years ago | 0

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Answered
How to generate N independent, identically distributed random numbers from the Reciprocal Normal Distribution?
% Generate 10 random numbers from the inverse normal distribution % (mu=0, sigma=1) % % G(y) = 1 - F(1/y) % is the cumulati...

4 years ago | 0

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Answered
'integral' with piecewise expressions
L = 1; Beta = @(y,L) pi/2.*((0<=y) & (y<L/2)) + (pi/2+0.3491).*((L/2<=y) & (y<3/4*L)) + (pi/2-0.3491).*((3/4*L<=y) & (y<=L)); ...

4 years ago | 1

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Answered
All the combinations for 3 variables
https://de.mathworks.com/matlabcentral/fileexchange/5475-cartprod-cartesian-product-of-multiple-sets https://de.mathworks.com/m...

4 years ago | 0

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Answered
Plotting the function by the points that need to be determined
Maybe something like this ? %% initial conditions global d k0 h_bar ksi m E; Ef = 2.77*10^3; Kb = physconst('boltzmann'); %...

4 years ago | 0

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Plot-Parameter study- Adsorption
I don't know whether you and Sona Ghulami are the same person, but i suggest you start with the last code under https://de.math...

4 years ago | 0

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plotting a signal which has two equations
None of the two if conditions is satisfied for your t-array. Thus the array S_if does not exist after the for-loop - even if you...

4 years ago | 0

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defining a fitting type
My guess is fitType = @(x,a,b,c,d,f)Even_fit(x,a,b,c,d,f,N); fit(x,y,fitType)

4 years ago | 0

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Answered
Error using sym/coeffs. First argument must be a scalar.
My guess is that VG1_0(1,1) is interpreted as a polynomial in the variable q2_hiz(t). Since your expression does not contain q...

4 years ago | 0

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