#14215: solve with sqrt seems less than powerful
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Reporter: kcrisman | Owner: burcin
Type: enhancement | Status: new
Priority: major | Milestone: sage-5.8
Component: symbolics | Keywords:
Work issues: | Report Upstream: N/A
Reviewers: | Authors:
Merged in: | Dependencies:
Stopgaps: |
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{{{
sage: eq = x == sqrt(x)
sage: solve(eq,x)
[x == sqrt(x)]
sage: solve(eq,x,to_poly_solve=True)
[x == 0, x == 1]
sage: eq = x^2 == sqrt(x)
sage: solve(eq,x,to_poly_solve=True)
[x == x^(1/4), x == 0]
sage: eq = x^2 == -sqrt(x)
sage: solve(eq,x,to_poly_solve=True)
[x == sqrt(-sqrt(x)), x == 1/2*I*sqrt(3) - 1/2, x == 0, x ==
-1/2*I*sqrt(3) - 1/2]
sage: eq = a*x**2 == -sqrt(x)
sage: solve(eq,x,to_poly_solve=True)
[x == -sqrt(-sqrt(x)/a), x == sqrt(-sqrt(x)/a)]
}}}
This is a simplification of an example a user posted on the Sage Facebook
page.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14215>
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