[sage-support] Re: why doesn`t solve() give a proper answer

[Slava]

Thank you!
to_poly_solve() is a strong function, and it works fast.

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[sage-support] why doesn`t solve() give a proper answer

[Slava]

Hello.
I`m trying to solve such simple system of equations: [sqrt(x) == 1, x
== y],
so I type:

x,y = var('x,y');
solve([sqrt(x) == 1, x == y], x, y);

the answer is: []
(just two brackets)

How to make it work?

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[sage-support] Re: Can Sage solve inequalities?

[Slava]

Thank you for your quick answers.
I want to solve, for example, such inequalities:
5^(2*x + 1) > 5^x + 4
log(x^2 - 5*x + 7, 3) > 1
and (x^3 - 6) / (x - 1) < 1.



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[sage-support] Can Sage solve inequalities?

[Slava]

Can Sage solve inequalities, or it`s not implemented yet,
or it is just in plans?


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[sage-support] How to make Sage to solve the equation?

[Slava]

When i try to solve this equation:
   solve(x^2*log(x, 2) == 1, x);
It answers me:
   [x^2 == log(2)/log(x)]
It,s true, but how can i get the numerical value of x?

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