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The Maxima on-line user's manual

Algebra Calculator

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Isqrt

Function: isqrt (<x>) Returns the "integer square root" of the absolute value of <x>, which is an integer.

n:8834884587090814639656521335894475316521399;
a:isqrt(n)+1;
b2:a*a-n;
while integerp(sqrt(b2))=false do  (a:a+1,   b2:a*a-n  );
b:sqrt(b2);
a-b;
a+b;

(%o1)                                true
(%i2) 

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isqrt (4294967296);

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isqrt(-22.5);

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isqrt(-22.5);

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isqrt

n:8834884587090814639...

a:isqrt(n)+1;

b2:a*a-n;

Calculate