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Question: What I'm doing bad with fsolve =S

Question:What I'm doing bad with fsolve =S

se123 0 Maple 13
student
October 22 2010
0

Im trying to resolve a simple system of 2 ecuations and 2 incognits, but I dont know why maple return the same that I put in the instruction as the answer, I will put my procedure here:

 

theta[2]:=20;
theta[3]:=theta[4]-30;

Maple returns:
                                     20
                                theta[4] - 30


fsolve({r2*cos(theta[2]) - r3*cos(theta[3])-r4*cos(theta[4])-r1=0,r2*sen(theta[2])-r3*sen(theta[3])-r4*sen(theta[4])=0}, {r3,theta[4]});

 

Maple returns:

fsolve({3 sen(20) - r3 sen(theta[4] - 30) - 7 sen(theta[4]) = 0,

  3 cos(20) - r3 cos(theta[4] - 30) - 7 cos(theta[4]) - 2 = 0}, {r3, theta[4]})

 

I know maybe Im doing something really stupid but my mind is closed.

 

Thank You my friends.
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