I was trying to find the solution for two theta variables in a couple of simultaneous equations (infact this is an iverse kinematics problem for a two link system pendulum).
The following are the initial inputs/equations to be manipulated:
Then I use the folowing command to rearrange for the theta values which I am after:
which gives me the result:
This is all fine until I give in values for l1, l2, x and y:
I have a RootOf in there with a _Z term poping up here and there. I know that this configuration of the two link mechanism in fact dows have a solution and that these numbers are reasonable. Thus I have three questions:
Why does this happen?
What does the "signum" mean here?
how do I go about getting the nummerical values?