Maple Professional
Maple Academic
Maple Student Edition
Maple Personal Edition
Maple Player
Maple Player for iPad
MapleSim Professional
MapleSim Academic
Maple T.A. - Testing & Assessment
Maple T.A. MAA Placement Test Suite
Möbius - Online Courseware
Machine Design / Industrial Automation
Aerospace
Vehicle Engineering
Robotics
Power Industries
System Simulation and Analysis
Model development for HIL
Plant Modeling for Control Design
Robotics/Motion Control/Mechatronics
Other Application Areas
Mathematics Education
Engineering Education
High Schools & Two-Year Colleges
Testing & Assessment
Students
Financial Modeling
Operations Research
High Performance Computing
Physics
Live Webinars
Recorded Webinars
Upcoming Events
MaplePrimes
Maplesoft Blog
Maplesoft Membership
Maple Ambassador Program
MapleCloud
Technical Whitepapers
E-Mail Newsletters
Maple Books
Math Matters
Application Center
MapleSim Model Gallery
User Case Studies
Exploring Engineering Fundamentals
Teaching Concepts with Maple
Maplesoft Welcome Center
Teacher Resource Center
Student Help Center
gfun[`diffeq+diffeq`] - determine the differential equation satisfied by the sum of two holonomic functions
gfun[`diffeq*diffeq`] - determine the differential equation satisfied by the Cauchy product of two holonomic functions
gfun[hadamardproduct] - determine the differential equation satisfied by the Hadamard product of two holonomic functions
Calling Sequence
`diffeq+diffeq`(eq1, eq2, y(z))
`diffeq*diffeq`(eq1, eq2, y(z))
hadamardproduct(eq1, eq2, y(z))
Parameters
eq1, eq2
-
two linear differential equations with polynomial coefficients
y
name; holonomic function name
z
name; variable of the holonomic function y
Description
The gfun[`diffeq+diffeq`](eq1, eq2, y(z)) command determines the differential equation satisfied by the sum of two holonomic functions, eq1 and eq2.
If f and g are holonomic function solutions of eq1 and eq2, respectively, the gfun[`diffeq+diffeq`] function returns a linear differential equation verified by .
The differential order of the returned equation is at most the sum of eq1 and eq2's differential orders for the gfun[`diffeq+diffeq`] function.
The gfun[`diffeq*diffeq`](eq1, eq2, y(z)) command determines the differential equation satisfied by the Cauchy product of two holonomic functions, eq1 and eq2.
If f and g are holonomic function solutions of eq1 and eq2), respectively, the gfun[`diffeq*diffeq`] function returns a linear differential equation verified by .
The differential order of the returned equation is at most the product of eq1 and eq2's differential orders for the gfun[`diffeq*diffeq`] function.
The gfun[hadamardproduct](eq1, eq2, y(z)) command determines the differential equation satisfied by the Hadamard product of two holonomic functions, eq1 and eq2.
If f and g are holonomic function solutions of eq1 and eq2, respectively, the gfun[hadamardproduct] function returns a linear differential equation verified by the Hadamard product of f and g. The function whose coefficient of in the Taylor expansion around 0 is the product of the corresponding coefficients of f and g.
Examples
See Also
gfun, gfun[`rec+rec`], gfun[`rec*rec`], gfun[cauchyproduct], gfun[poltodiffeq]
Download Help Document