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Kenneth Johnson


KJ Innovation

Last seen: 4 days 前 |  自 2011 起处于活动状态

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统计学

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已提交


Polynomial-to-Pade coefficient conversion
poly2pade converts polynomial coefficients to a Pade approximant's numerator and denominator coefficients.

3 months 前 | 3 次下载 |

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roots_
roots_(c) works with poorly scaled polynomials and does not return zero when c(end) is nonzero.

4 months 前 | 1 次下载 |

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Function pagetensorprod.m, paged tensor product
pagetensorprod generalizes tensorprod for paged operation (analogous to pagemtimes).

5 months 前 | 1 次下载 |

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Class DAA, "Derivative-Augmented Array"
Class DAA, "Derivative-Augmented Array", is a general-purpose automatic differentiation engine implemented in MATLAB.

2 years 前 | 1 次下载 |

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Padé coefficients
Calculate Padé coefficients corresponding to a truncated Taylor series.

2 years 前 | 3 次下载 |

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pageexpm
Paged matrix exponential function

3 years 前 | 2 次下载 |

已回答
Why does pagemldivide not give Singular Matrix warnings?
Summary of response from Technical Support: The 'help' for 'pagemldivide' states that the function never warns for ill-condit...

3 years 前 | 0

| 已接受

提问


Why does pagemldivide not give Singular Matrix warnings?
The new pagemldivide function in R2022a Prerelease (I think also in Parallel Computing Toolbox) doesn't give any Singular Matrix...

3 years 前 | 2 个回答 | 1

2

个回答

提问


Why is subscripted assignment so inefficient?
Why is MATLAB's subscripted assignment so abysmally inefficient with more than 2 subscripts? e.g., >> clear, a = []; tic, for j...

3 years 前 | 1 个回答 | 3

1

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Generalized matrix operators
The functions mtimes_.m, mldivide_.m, and mrdivide_.m generalize the corresponding MATLAB functions.

3 years 前 | 1 次下载 |

提问


MATLAB's inefficient copy-on-write implementation
MATLAB's copy-on-write memory management seems to have a serious defect, which I think is the reason behind the abysmal performa...

3 years 前 | 2 个回答 | 1

2

个回答

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bsxi
Array indexing for binary singleton expansion

3 years 前 | 1 次下载 |

提问


In what way is the new R2021b Editor UI "improved"?
I find the "new and improved" Editor UI in R2021b to be extremely irritating, in no way better than R2021a. How did this get pas...

3 years 前 | 3 个回答 | 11

3

个回答

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Linear differential equation solver (lde.m)
solves a linear, first-order, vector differential equation

3 years 前 | 2 次下载 |

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提问


Is this a bug in eig?
This issue came up with the roots function (see roots_ on File Exchange), where eig was failing on the companion matrix. Follow...

3 years 前 | 1 个回答 | 3

1

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permn
Generate permutations of 1:n and permutation parity.

4 years 前 | 2 次下载 |

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str2subs, subs2str
Convert a string to/from a subscript struct for use in subsref and subsasgn.

4 years 前 | 2 次下载 |

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fminsearch_(funfcn,x0,options,varargin)
Works around a bug (or design defect) in fminsearch.

8 years 前 | 1 次下载 |

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serpind.m
serpentine traversal of an N-dimensional array

8 years 前 | 2 次下载 |

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fgridmin.m
global minimization utility

8 years 前 | 1 次下载 |

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Generalized Matrix Exponential
Solves Y'(t) = D(t)*Y(t) for Y(1) with Y(0) = I (identity matrix).

9 years 前 | 1 次下载 |

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Scalar
The Scalar base class disallows non-scalar instantiation.

10 years 前 | 1 次下载 |

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Matrix exponential
Matrix exponential algorithm with improved numerical precision

11 years 前 | 2 次下载 |

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Matrix polynomial
Efficiently evaluate a polynomial with square-matrix argument and scalar coefficients.

11 years 前 | 1 次下载 |

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matrix power
more efficient than MATLAB's mpower function

11 years 前 | 1 次下载 |

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elementwise power
more efficient than MATLAB's power function

11 years 前 | 1 次下载 |

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Scanned-Spot-Array EUV Imaging for High-Volume Maskless Lithography
Design data and optical simulation code for maskless EUV lithography system

12 years 前 | 3 次下载 |

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Cornu Spline
two-point spline with slope constraints

13 years 前 | 1 次下载 |

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Complex Erf (Error Function), Fresnel Integrals
complex erf function

13 years 前 | 3 次下载 |

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