On 25/01/17 08:53, Constantine Frangos wrote:

> (1) How is the assume() command applied in order to limit

> a symbolic variable w to a real interval (a, b], for example,

> (-pi/2, pi/2], [0, pi], (-pi, pi], etc?

Unfortunately, I don't know any way to do this at the moment. If you're

using "solve", perhaps you can pass inequality constraints to it?

The symbolic package uses Sympy; here is a perhaps helpful thread about

this in Sympy:

http://stackoverflow.com/questions/19553652/sympy-limit-symbol-variable-to-interval> (2) The documentation for the assume() command states that it

> can be used as follows:

>

> sym X = assume (X, COND1, COND2, …)

>

> Some of the possible values for cond1, cond2, etc seem to be

> 'positive', 'negative', 'integer', 'real'.

>

> What are all the other possible values?

See "help assumptions" and in particular:

>> assumptions ('possible')

The upcoming 2.5.0 release will have many more options (but still no

general algebraic constraints).

best,

Colin

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