Answered
Curve fitting to atan function not working
phi_A=[-3.228;1.574;-0.8063;0.02548;1.904;2.87;1.853;-1.824;3.929]; phi_B=[-3.259;-1.466;-3.859;-3.035;-1.18;2.857;1.851;-1.811...

5 years ago | 0

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Answered
Why doesn't my script work? It comes back with Error: File: equTriPrismSurfArea.m Line: 6 Column: 1 This statement is not inside any function.
READ THE CODE YOU WROTE. function [SA]=equTriPrismSurfArea(s,h) SA=((sqrt(3)/2)*(s^2))+(3*s*h); end s = [1 2 3 4 5]; ...

5 years ago | 0

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Answered
symbolic calculation for series
But you defined U as a double precision array! See the difference. V = zeros(5) Note that zeros(5) creates a 5x5 array. If you...

5 years ago | 1

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What is a symbolic expression (syms) and how do I use this when doing differentiation in matlab?
No. You misunderstand what diff does, and why diff is used there. diff, when applied to a numeric vector, forms the difference ...

5 years ago | 0

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How to plot a multivariable function with constraints
Can you solve for y, as a function of k, given the constraint? (YES.) If so, then do you really have a TWO variable problem? (N...

5 years ago | 1

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How to remove outliers and smooth the complex signals?
Is it valid to work with the real and imaginary parts separately? Possibly, though you know the data better than we do. What cau...

5 years ago | 0

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Why do I receive Index exceeds the number of array elements (1)?
You would be best served to learn to use the debugger. But I can see what happens. At the first iteration, i = 1. And all of yo...

5 years ago | 2

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How to write following equation with "dsolve" command?
Oh well. My fault, as i saw this question posted just before I went to bed last night. No rest for the weary. :) But we can at l...

5 years ago | 1

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how to evaluate integral for given input function ?
No, you don't want to fit a polynomial to that vector. Polynomials are just bad news for anything. After seeing the your pictur...

5 years ago | 1

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Answered
What determines computation speed in MatLab?
What determines computation speed? A huge number of things. Try running bench on your computer. It looks at a many computations...

5 years ago | 1

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Answered
Matrix 'if' statement
One thing that new users of MATLAB mistake, is they want an if statement to apply to every element of a matrix or vector. For e...

5 years ago | 4

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Plot with varying variable in optimization
You want to vary q, and for every value of q, get a corresponding value for K? w=2; y=10 q=0.5:1.5 % here q is the varing var...

5 years ago | 0

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Answered
Non-linear system of inequalities
Start with, what can we do in symbolic form? syms S G real Eq(1) = G > 21; Eq(2) = S >= 15; Eq(3) = S <= 18; Eq(4) = 61 <...

5 years ago | 2

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Answered
How do I find If one polygon is inside another?
There is a simple solution. It involves two tests, both of which are essentially vectorized. In fact, now that I think of it, th...

5 years ago | 0

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How to display the nth term where the nth term is found by adding x number previous term?
Admit it. This is homework, since nobody would ask you to do this if it were not. And since it is homework, NOBODY should write ...

5 years ago | 0

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Integrating discrete values to determine the absolute value of displacement
Find any consecutive pair of points that change the sign of their velocity. Between such a pair, use (linear) interpolation to ...

5 years ago | 1

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I want to loop an equation over multiple rows
Your problem is you want to write this as if you are still using Excel. MATLAB is not a spreadsheet, but you are still thinking ...

5 years ago | 0

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Answered
Intersection of Parametric Curves Using vpasolve
Your probem is when you zoomed in. The mathematics seems fine. >> tn tn = 11.4745470305524 >> un un = ...

5 years ago | 1

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Answered
how can I solve this double integral?
Why does this look like homework? Why do you assume it has a finite solution? The integral over y is trivial. syms y phi K =...

5 years ago | 0

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How can I speed up vpasolve?
Seriously, it has no solution? Gosh, am I surprised. So what does this do? syms z thetaz a = 1; b = 2; theta0 = 0; eqn = (a...

5 years ago | 0

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Answered
What does a=[b(90:end) b(1:89)] represent ?
You very clearly need to spend some time with a MATLAB manual or tutorial. You are asking a basic question, that would be covere...

5 years ago | 0

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Fit a transform to remove piecewise discontinuities
Honestly, I don't see the problem, at least if the discontinuity is as large as you show it. That will make it clear where the b...

5 years ago | 1

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How to symbolically integrate f(T) = exp (E/(8.314*T) through integration by parts or with trapezoidal method?
It is simply not true that there is no UNIQUE solution. There is no EXACT, analytical solution that can be written in a simple a...

5 years ago | 0

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Is there anyway to Re-grid one dataset to another dataset resolution without interpolating??
What you are asking to do is arguably still "interpolation" of a sort. In fact, Walter''s use of nearest neighbor is quite reaso...

5 years ago | 0

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cross multiplication of algebra expression denominators
syms x y a b k eq = y/a == k+x/b Symple enough. :) eq = expand(eq*a*b)

5 years ago | 0

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Optimal values dynamic programming and mathematical programming
The crystal ball is very foggy today. What does it matter what we think? We know nothing about what you actually did, if the cod...

5 years ago | 1

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correlation of nonlinear variables
Correlation does not really make sense in respect to nonlinear variables. Depending on the values of the variables, they will be...

5 years ago | 2

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Why does N-D convexhulln give a matrix as an output instead of vector containing indices of inputs?
The convex hull of a 2-d data set will be simply a polygon. So the convex hull code returns the set of points in the polygon, in...

5 years ago | 0

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Answered
Modification in besselk (Modified Bessel fn of 2nd kind order zero)
Simple answer - No. Utilities like this, erf is another excellent example, that while they can be defined in terms of an integr...

5 years ago | 0

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Answered
I am trying to solve for w using determinants
Why do you think there is a problem. We can shorten the coefficients of Z a bit, just to look at what is happening. vpa(Z,3) a...

5 years ago | 0