# [maple] nonlinear system?

i need help on this part, does anyone have any idead about maple lab? I should get the cure and trajectories in the red rectangular. But i try to fix the points and range, i still didn't get it

http://img193.imageshack.us/img193/387/deqp.jpg [Broken]

Code:
trange1 := -3..3: window1 := x=1..3,y=-3..-1:
inits1:=[[x(0)=2.5,y(0)=-1.5],[x(0)=1.5,y(0)=-1.5],[x(0)=1.5,y(0)=-2.5],
[x(0)=2.5,y(0)=-2.5],[x(0)=2+2.0/3.0,y(0)=-2+(3.0-sqrt(17.0))/3.0]]:
DEplot([dex,dey],[x(t),y(t)],t=trange1,inits1, window1,color=GREEN,
linecolor=[RED,BLUE,CYAN,PLUM,BLACK],thickness=2,stepsize=0.002,
title="Phase plane near (2,-2): nonlinear system");

F1:=4*u+0*v;
G1:=6*u+6*v;
dex1:=diff(x(t),t)=eval(F1,{u=x(t),v=y(t)});
dey1:=diff(y(t),t)=eval(G1,{u=x(t),v=y(t)});
DEplot([dex1,dey1],[x(t),y(t)],t=trange2,inits2, window1,color=GREEN,linecolor=[RED,BLUE,CYAN,PLUM,YELLOW],thickness=2,stepsize=0.002,
title="Phase plane near (0,0): linearized system");
Modify the above commands to produce plots of the phase plane for the nonlinear and linear systems near (6, 2). There are no straight line trajectories to consider in this case..

## The Attempt at a Solution

Last edited by a moderator:

## Answers and Replies

Related Calculus and Beyond Homework Help News on Phys.org
ohh i figured this out... thank you for visiting