Question

solve, command reveals solution for each part of my polynomial

Hi I am using this <http://uk.mathworks.com/help/symbolic/solve.html> however the solution presented is for each part of th...

presque 8 ans il y a | 3 réponses | 0

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solve, command reveals solution for each part of my polynomial

Thank you both. Reading further I think vpasolve may condense these roots to a single value. Are you able to assist in using thi...

solve, command reveals solution for each part of my polynomial

Thank you both. Reading further I think vpasolve may condense these roots to a single value. Are you able to assist in using thi...

presque 8 ans il y a | 0

A répondu

Creating symbolic functionAnd variable

Thank you, I possess this toolbox but stupidly I hadn't started it, therefore the commands were not recognised.

Creating symbolic functionAnd variable

Thank you, I possess this toolbox but stupidly I hadn't started it, therefore the commands were not recognised.

presque 8 ans il y a | 0

Question

Creating symbolic functionAnd variable

sims and symfun Are no longer recognised commands however I can create a variable with symvar. Is there a document page that out...

presque 8 ans il y a | 2 réponses | 0

Question

Calculate X when derivative is zero

Hello, I want to calculate the first X instance when the function derivative is set equal to 0. I understand the solve toolbox ...

presque 8 ans il y a | 1 réponse | 0

Question

Constant error plotting function

when I use fplot I receive an error that the first constant that's already been used. I tried using @(varargin) command however ...

presque 8 ans il y a | 1 réponse | 0

Question

plotting function function handle

hello, I have a function handle created from a previous function. How do I plop this between limits? Thanks.

presque 8 ans il y a | 1 réponse | 0

Question

Constant already used When creating function handle

I am trying to create a handle for a Function, I received two errors: Error: Expression or statement is incomplete or i...

presque 8 ans il y a | 1 réponse | 0

Question

Polynomial fitting generates erratic plot

Hello, I have a distance/time curve. The polynomial fit is erratic. A cubic function fits the data well however this does not s...

presque 8 ans il y a | 1 réponse | 0

Question

Plot Y derivative and find resulting X value minimum

, I have X and Y data as time and distance. I would like to find the derivative the Y values and plot this. Therefore yielding ...

plus de 8 ans il y a | 1 réponse | 0

Question

Date incompatible Using curve fit

hello when I fit data for an oscillating curve I get an error that the data is incompatible and requires a Z value. Therefore...

plus de 8 ans il y a | 1 réponse | 0

Question

pdb file packing data Using homology toolbox

hello, is it possible using the homology toolbox to view and determine the amount of crystal packing within a pdb file? T...

plus de 8 ans il y a | 1 réponse | 0

Question

Maximum X value for maximum calculation obsurd

xHello using fminbnd to calculate a maximum, the resulting X value calculated is nought .9 whereas it should be about 3100. Ca...

plus de 8 ans il y a | 1 réponse | 0

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undefined function or variable when definition set

Thanks, this briefly answers my long question Walter.

undefined function or variable when definition set

Thanks, this briefly answers my long question Walter.

plus de 8 ans il y a | 0

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Question

undefined function or variable when definition set

hello my work space looks 'f, minusF, p1, p2, p3, p4, p5, p6, p7, p8, p9, RMSD, Sim' however when I issue the fminbnd c...

plus de 8 ans il y a | 3 réponses | 0

Question

Using in-line function with fminbnd

hello I have created a separate handler (minusF) to deal with function maximum (fminbnd -f). However this needs an in line ...

plus de 8 ans il y a | 2 réponses | 0

Question

Evaluating a function, variable not defined

hello, I am trying to evaluate a function but I receive an error. Will someone please help? My error is y = feval(minusF,x...

plus de 8 ans il y a | 2 réponses | 0

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undefined X variable in curve fit

I had tried the 1st, I think it is my installation. Thanks.

undefined X variable in curve fit

I had tried the 1st, I think it is my installation. Thanks.

plus de 8 ans il y a | 0

Question

undefined X variable in curve fit

hello, I have returned to the optimisation, I get f(x) = p1*x^7 + p2*x^6 + p3*x^5 + p4*x^4 + p5*x^3 + p6*x^2 + p7*x + p8...

plus de 8 ans il y a | 2 réponses | 0

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Lowess smoothing for polynomial curve

Hello this page appears appropriate http://uk.mathworks.com/help/curvefit/lowess-smoothing.html however, I do not see the Low...

Lowess smoothing for polynomial curve

Hello this page appears appropriate http://uk.mathworks.com/help/curvefit/lowess-smoothing.html however, I do not see the Low...

plus de 8 ans il y a | 0

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using packages for defining constants

This was fixed using UNIX environment and M files.

using packages for defining constants

This was fixed using UNIX environment and M files.

plus de 8 ans il y a | 0

| A accepté

Question

Lowess smoothing for polynomial curve

hello, I have a 7th degree polynomial curve, the X axis is time and the Y is a RMSD value. The error is 0.2. Is Lowess a good ...

plus de 8 ans il y a | 1 réponse | 0

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Applying a negative to the function to find the maximum

Many thanks for all these answers; this was what I was after Titus. I will implement your suggestion Stephen. Thank you again.

Applying a negative to the function to find the maximum

Many thanks for all these answers; this was what I was after Titus. I will implement your suggestion Stephen. Thank you again.

plus de 8 ans il y a | 0

Question

Applying a negative to the function to find the maximum

hello to find the maximum point in a curve I must use the negative function however this creates errors. My function is f = @(...

plus de 8 ans il y a | 5 réponses | 0

Question

using packages for defining constants

hello, using packages to define constants appears a very efficient method for repetitive defining; I was using http://uk.math...

plus de 8 ans il y a | 1 réponse | 0

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Exporting function from curve fitting toolbox

It appears that cut and paste is the simplest method. I asked this question since I am disabled and I thought there may be a fa...

Exporting function from curve fitting toolbox

It appears that cut and paste is the simplest method. I asked this question since I am disabled and I thought there may be a fa...

plus de 8 ans il y a | 0

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Question

Calculating optimum using fminbnd

I am trying to use fminbndto calculate an optimum value. I want to define the function and use this with fminbnd. However I get ...

plus de 8 ans il y a | 1 réponse | 0

Question

Calculating optimum using fminbnd

I am trying to use fminbndto calculate an optimum value. I want to define the function and use this with fminbnd. However I get ...

plus de 8 ans il y a | 1 réponse | 0