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Jun
23
comment How can I get the exact real solution of this equation?
I am a teacher. When I teach for my students, in this case, when we solve by hand, we always conclude the given solution has only real solution (solve in real domain). Am I wrong?
Jun
23
comment How can I get the exact real solution of this equation?
Thank you very much for your answers and your helps.
Jun
23
comment How can I get the exact real solution of this equation?
Perhaps about my English, therefore my question is not clearly. My question is "How many solutions when I solve the equation Sqrt[x] + Sqrt[1 - x^2] == Sqrt[2 - 3 x - 4 x^2] in the real domain?
Jun
23
comment How can I get the exact real solution of this equation?
I have just online. Thank you four your answer.
Jun
23
accepted How can I get the exact real solution of this equation?
Jun
23
comment How can I get the exact real solution of this equation?
I used Solve[Sqrt[x] + Sqrt[1 - x^2] == Sqrt[2 - 3 x - 4 x^2], x, Reals] // ToRadicals, then I got one real solution.
Jun
23
comment How can I get the exact real solution of this equation?
@MichaelE2 I use Solve[Sqrt[x] + Sqrt[1 - x^2] == Sqrt[2 - 3 x - 4 x^2], x, Reals] // ToRadicals and received one real solution. Thank you.
Jun
23
revised How can I get the exact real solution of this equation?
added 109 characters in body
Jun
23
comment How can I get the exact real solution of this equation?
@Artes With Maple, I received one real solution. For me, the given equation has only one real solution.
Jun
23
comment How can I get the exact real solution of this equation?
@belisarius and @Algohi, with -1 - Sqrt[2], the Sqrt[-1 - Sqrt[2]]is not identified.
Jun
23
asked How can I get the exact real solution of this equation?
May
26
awarded  Civic Duty
Apr
11
revised How can I select two lists from a list of lists so that I receive the system of equations has only rational solutions?
added 1 characters in body; edited title
Apr
11
asked How can I select two lists from a list of lists so that I receive the system of equations has only rational solutions?
Mar
23
accepted Reduce with Integer domain, but receive a rational solution
Mar
6
comment How to find the complex number has least and greatest modul satisfying a given condition?
No. But I think, the solution does not exactly.
Mar
5
accepted How to find the complex number has least and greatest modul satisfying a given condition?
Mar
5
asked How to find the complex number has least and greatest modul satisfying a given condition?
Feb
24
comment How do I replace a variable in a polynomial?
see mathematica.stackexchange.com/questions/42121/…
Feb
19
awarded  Popular Question