theta = Function('theta') is an undefined function with no arguments.
When you call 'theta(t)' the result is a function with the argument 't'.
Jason
moorepants.info
+01 530-601-9791
On Wed, Oct 16, 2013 at 11:58 AM, Cavendish McKay <[email protected]
> wrote:
> 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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