CAS command question
01-08-2017, 04:17 PM (This post was last modified: 01-08-2017 06:41 PM by compsystems.)
Post: #55
 compsystems Senior Member Posts: 1,379 Joined: Dec 2013
RE: CAS command question
About MatLab, start as a numerical engine, then business the symbolic engine of MAPLE, then buy MuPAD, Now we say that MatLab has two numerical and symbolic motors, for this reason it is already considered a CAS.

continuing with the inequations, I want to get the next result x < -2 or -2 > x, but without using solve cmd I tried collect, expand, simplify and nothing, The ti89 if simplify, I do not know if other CASs

(-2*x) > 4;
Ans/-2; ⇨ ((-2*x) > 4)/-2
simplify(Ans); ⇨ ((-2*x) > 4)/2 // =(
collect(Ans), ⇨ ((-2*x) > 4)/2 // =(
expand(Ans) ⇨ (1/2)*((-4)>(2*x)) // =(

Someone please, to prove the simplification of the previous inequalities in other CAS.
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