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# IsolatingInterval

 IsolatingInterval[a]gives a rational isolating interval for the algebraic number a. IsolatingInterval gives an isolating interval of width at most dx.
• IsolatingInterval[a] gives an interval that does not contain any other root with the same minimal polynomial as a.
• If a is complex, IsolatingInterval[a] gives a pair of Gaussian rationals defining an isolating rectangle in the complex plane.
Find an isolating interval of :
Find an isolating interval of with width less than :
Check that belongs to and the width of is less than :
Find an isolating interval of :
 Out[1]=

Find an isolating interval of with width less than :
 Out[1]=
Check that belongs to and the width of is less than :
 Out[2]=
 Scope   (7)
Isolating interval of a rational number:
Isolating interval of a Gaussian rational number:
Isolating interval of a radical:
Isolating interval of a Root object:
Isolating interval of an AlgebraicNumber object:
Isolating interval of an algebraic combination of algebraic numbers:
Isolating interval with width less than :
Use RootIntervals to find isolating intervals for all real roots of a polynomial:
Find isolating intervals for all complex roots of a polynomial:
Find an isolating interval of a real algebraic number:
Use MinimalPolynomial to find the minimal polynomial of the algebraic number:
Use FindRoot to find an approximation of the root of poly in :
Compute an approximation of alg directly:
New in 6