Hi
W10,SageMath 9.2
I wanted to answer this question, but I realized that myself, I was not able to answer it ! ;-(
how to simplify eq below ?
var('a,b,c,d',domain='real')
assume (d!=0)
eq=(a+b)/(c*d)==3/d
print(eq)
print (eq.simplify())
print(eq.simplify_full())
print(eq.simplify_rational())
print(eq.simplify_rational())
Why simplify ?
sage: (eq.lhs()-eq.rhs()).factor()
(a + b - 3*c)/(c*d)
Regarding the original question, note that you can do:
sage: eq * d
(a + b)/c == 3
so what you propose as a rough solution is to look in an equation what are the common divisors and to multiply by these divisors, as we do by hand ??. the question is why SageMath does not know how to simplify this very simple equation . I minus your solution. moreover we do not know the initial equation alphax does not want to share his code.
Indeed, the first sentence of the original question https://www.maths-forum.com/cafe-math... is asking about multiplying by the denominator. The non-simplification of such a simple case is of course not satisfying. Another missing feature of the symbolic ring would be to hold everything and let the user suggest the operations one by one.
Asked: 2021-08-13 10:24:20 +0100
Seen: 511 times
Last updated: Aug 14 '21
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any assume missing ?