Having worked through this a bit more, I've found the bit of syntax that
makes the difference between working and not working, but I'm not sure I
fully understand it. If I do
m,g,r,b,t = symbols("m,g,r,b,t")
theta = Function('theta')
x = (r+b)*sin(theta(t)) + r*theta(t)*cos(theta(t))
I don't have problems, but if I do
m,g,r,b,t = symbols("m,g,r,b,t")
theta = Function('theta')
x = (r+b)*sin(theta) + r*theta*cos(theta)
I get the TypeError from my previous email. What exactly is the difference
between theta and theta(t) when I have declared theta=Function('theta')?
Cavendish
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