Conversion from MuPAD to MATLAB
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Can anybody help me to convert the following MuPAD functions to MATLAB Symbolic Math?
//Peano Th and kernel
//pp - truncated power
pp:=(z,n)->piecewise([z>=0,z^n],[Otherwise,0]):
//PeanoKernel - compute Peano kernel given L, dex and var
PeanoKernel:=proc(L,d,t)
local K;
begin
K:=1/d!*eval(L(x->pp(x-t,d)));
return(K);
end_proc:
//PeanoCorr - Corollary to Peano Theorem
PeanoCorr:=proc(L,d)
local K;
begin
K:=L(x->x^(d+1));
K:=1/(d+1)!*factor(simplify(K))*(D@@(d+1))(f)(`ξ`);
return(K);
end_proc:
//PeanoKernel:=proc(L,d,t) //versiune veche
// local K,ff;
//begin
// ff:=x-->piecewise([x-t>=0,(x-t)^d],[Otherwise,0]);
// K:=1/d!*eval(L(x->ff(x)));
// return(K);
//end_proc:
//PeanoEstimation - Estimation based on Peano's theorem
PeanoEstimation:=proc(L,d,a,b)
local K;
begin
K:=PeanoKernel(L,d,t);
M[d+1]*int(abs(K),t=a..b);
end_proc:
The automatic conversion yields a lot of errors.
4 个评论
darova
2020-3-26
I think faster be to write new code. DO you how original formulas?
Radu Trimbitas
2020-3-26
I tried but I had a lot of errors.
If L is a linear and continuous functional, and L(f)=0 for each polynomial f of degree at most d
, where K is the Peano Kernel
, and 
is z for 
and 0 otherwise.I intend to use these formulas to compute rests for various approximation formulas.
The code works fine in MuPAD, but Mathworks removed the MuPAD Notebook Interface in 2020 a prerelease.
darova
2020-3-27
What about this
syms t
K = 1/factorial(d)*L( (x-t)^d );
L = integral(K*f^(d+1),a,b)
Radu Trimbitas
2020-3-28
回答（1 个）
Cris LaPierre
2020-3-28
0 个投票
Have you seen this page? It recommends trying the convertMuPADNotebook function. It also points to the resource page Convert MuPAD Notebooks to MATLAB Live Scripts.
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2020-3-25
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