SQRT _ _ _ _ _ _ _ _ _ _ _ _ operator

The sqrt operator returns the square root of its argument.

syntax:

sqrt(<expression>)

<expression> can be any REDUCE scalar expression.

examples:

sqrt(16*a^3); 

  4*SQRT(A)*A 


sqrt(17); 

  SQRT(17) 


on rounded; 

sqrt(17); 

  4.12310562562 


off rounded; 

sqrt(a*b*c^5*d^3*27); 

                                             2
  3*SQRT(D)*SQRT(C)*SQRT(B)*SQRT(A)*SQRT(3)*C *D

sqrtchecks its argument for squared factors and removes t hem.

Numeric values for square roots that are not exact integers are given only when rounded is on.

Please note that sqrt(a**2) is given as a, which may be incorrect if a eventually has a negative value. If you are programming a calculation in which this is a concern, you can turn on the precise switch, which causes the absolute value of the square root to be returned.