OŠ @ Jednoocí on 1/6/2016 Computer algebra systems en.wikipedia.org/wiki/List_of_computer_algebra_systems
“symbolic math” | computer algebra | symbolic computation | algebraic computation • Algebra: substitutions, simplification, special functions,39 … •NotesCalculus: on derivatives, groundwater integrals, limits, dating series with expansions,Ar … •OndSolvingřej Šrámek, algebraic/differential Charles University in Prague, [email protected] December 23, 2015
Maple1WorkbyYokochi et al. (2012) www.maplesoft.com/products/maple/ MapleYokochi 2015 et al. Student(2012)proposeusing Edition … $12639Ar/40Ar⇤ as a chronometer of fluid migration and fluid–rock interac- Mapletion in 2015 the Earth’s Academic crust, … applicable $1560 to a much broader age range than simply using decay of the original atmospheric 39Ar. The picture in time: see Figure 1.Atfirstsight,Ifoundtheirmathabitunclear,esp.thetimedependenceof Maplethe various Example concentrations, so went through it in detail. One deals with a decay law for N with a production term P : dN = N + P, (1) dt whose integral from t =0to t = tf with initial condition N(0) = N0 and assuming constant P is
P t t N(t )= 1 e f + N e f . (2) f 0