Advanced Math - Maplesoft

Transcription

Advanced Mathconjugate and RootOfThe conjugate command now has extended support for RootOf expressions. Youcan now find the conjugate of the following:Indexed RootOfsRootOf expressions with a numerical selector and real coefficientsThe following examples return unevaluated in Maple 2015 and earlier. evalFor indefinite integrals, sums, and products, as well as for differentiations, theeval command now supports an additive change of the variable.

Gröbner BasesMaple 2016 includes a new C implementation of the F4 algorithm for computingGröbner bases, replacing FGb. The new code is generally faster and uses multiplethreads. The benchmarks below show real time on a quad core Intel Core i5 4590 3.3GHz computer using a logarithmic scale. The new code supports primes up to, anincrease over FGb's 16-bit primes. To compute over the rationals, Maple uses Chineseremaindering and rational reconstruction.

productMaple 2016 includes improved handling of "product over RootOf" cases. Thefollowing example returns unevaluated in Maple 2015 and earlier: Series and Limit ComputationsA number of improvements were made to series and limit computations in Maple.The following series and asymptotic functions were added:Asymptotic expansions of Airy functions atSeries and asymptotic expansions of hypergeometric functionsSeries expansions of abs and signum in the real case

Series expansion of GAMMA function at a symbolic poleAsymptotic expansion of incomplete GAMMA function w.r.t. the parameterAsymptotic expansion of Hurwitz Zeta functionSeries and asymptotic expansions of harmonic numbersSeries expansions of ln and related functions with a logarithmic branch cutdepending on a real parameter were improved.Finally, limit computations of oscillating functions were improved.New Series ExpansionsThe following series expansions could not be computed in earlier versions of Maple:functions at 1 The case where the lower parameter minus the sum of the upper parameters is aninteger is supported.

The harmonic function at a negative integer. New Asymptotic ExpansionsThe following asymptotic expansions could not be computed in earlier versions ofMaple:Airy functions at

Hypergeometric functions w.r.t. the argument, whennumber of upper and lower parameters, respectively:, whereandare the Cases where the two upper parameters of ahandled as well: function differ by an integer are

Hypergeometric functions w.r.t. a parameter, when the function is actuallyelementary: 1The harmonic function:

Two-sided and One-sided Expansions of absand signumMaple can now compute two-sided expansions of signum at finite nonzero points. One-sided expansions of abs and signum at 0 and asymptotic expansions can nowalso be computed. 1 Expansions of Functions with a LogarithmicBranch Cut Depending on a Real ParameterFor functions ln, arctan, arccot, arctanh, arccoth, Ei, Ci and Chi depending on aparameter, Maple now computes series expansions that are correct for all real valuesof the parameter (and for all complex values of the series variable sufficiently closeto the expansion point).

Limits of Oscillating FunctionsLimit computations for functions containing oscillating terms were improved. Thefollowing limits could not be computed in Maple 2015 or earlier. undefined 0Symbolic IntegrationThe results for definite integration of rational functions have been improved. In certaincases when the denominator is of degree or higher, the result is now simpler.Maple 2016 gives:

where Maple 2015 produced: And Maple 2016 gives the much simpler: compared to the Maple 2015 result for the same problem: In addition, Maple can now compute more definite integrals that could not be computedin Maple 2015 or earlier.

Symbolic SummationMaple 2016 includes a number of improvements to Maple's symbolic summationengine:Improved handling of definite parametric sumsNew option formal for sumSupport for Jacobi Theta sumsSupport for piecewise expressions with more than two branchesImproved divergence testing for infinite sumsBetter support for doubly infinite sumsParametric Sums and Option FormalMaple 2016 includes several improvements for parametric sums:The scope of the option parametric was extended so it now works for more typesof definite sums.For infinite sums, Maple is now more careful regarding potentially divergentparametric sums. The behavior can be controlled using assumptions, the

EnvFormal environment variable, or, equivalently, a new option formal to thesum command.By default, Maple returns a genericanswer for certain types of parametricdefinite hypergeometric sums.With option parametric, a complete casedistinction is now returned forhypergeometric sums with a singleparameter that is valid for all integervalues of the parameter: 0 The behavior for infinite parametric sums of geometric, hypergeometric, polylog, orZeta type has changed.Without any assumptions on theparameter, such sums now returnunevaluated.The same sums with appropriateassumptions:

Alternatively, formal answers can beobtained by either setting theenvironment variable,or by specifying the new option formal.(This even works for non-parametricdivergent sums.)For geometric, polylog, and Zeta typesums, option parametric can also beused:

1 Jacobi ThetaMaple now recognizes infinite sums that can be expressed in terms of JacobiTheta functions.

Piecewise SumsMaple now supports piecewise summands with integer branch points and more thantwo branches. Sums Diverging toFor some non-hypergeometric infinite sums without parameters, Maple now detectswhen they diverge to. Doubly Infinite SumsMaple now has improved support for doubly infinite sums, by splitting them into twoone-sided infinite sums.

Advanced Math conjugate and RootOf The conjugate command now has extended support for RootOf expressions. You can now find the conjugate of the following: Indexed RootOfs RootOf expressions with a numerical selector and real coefficients The followi