Jul 23, 2007 #1 B billano786 Super Member Joined Apr 26, 2001 Messages 140 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,296 Activity points 741 I wish to expand a multivariable differential equation in maple, the code is below f:=sin(x(t)+y(t))+x(t)+diff(x(t),t); /d \ f := sin(x(t) + y(t)) + x(t) + |-- x(t)| \dt / > mtaylor(f,{x(t)=1,y(t)=-2},5); Error, (in mtaylor) invalid 2nd argument (expansion point) Can any one help in writing the correct code?
I wish to expand a multivariable differential equation in maple, the code is below f:=sin(x(t)+y(t))+x(t)+diff(x(t),t); /d \ f := sin(x(t) + y(t)) + x(t) + |-- x(t)| \dt / > mtaylor(f,{x(t)=1,y(t)=-2},5); Error, (in mtaylor) invalid 2nd argument (expansion point) Can any one help in writing the correct code?
Jul 31, 2007 #2 E electricpete Member level 2 Joined Jun 4, 2006 Messages 45 Helped 10 Reputation 20 Reaction score 4 Trophy points 1,288 Activity points 1,624 Re: Need help in maple I'm no expert in multivariate Taylor expansions. But I think the maybe the diff(x(t),t) is giving problems... perhaps it is an ill-posed problem. If you get rid of that, it works. readlib(mtaylor): f:=sin(x+y)+x+z; mtaylor(f,[x=1,y=-2],5); returns a result.
Re: Need help in maple I'm no expert in multivariate Taylor expansions. But I think the maybe the diff(x(t),t) is giving problems... perhaps it is an ill-posed problem. If you get rid of that, it works. readlib(mtaylor): f:=sin(x+y)+x+z; mtaylor(f,[x=1,y=-2],5); returns a result.
Jul 31, 2007 #3 B billano786 Super Member Joined Apr 26, 2001 Messages 140 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,296 Activity points 741 Re: Need help in maple I know that by removing the derivative i can get expansion, however, my problem is to expand a multivariable differential equation.
Re: Need help in maple I know that by removing the derivative i can get expansion, however, my problem is to expand a multivariable differential equation.