SQRT
NAME
sqrt - This function computes the square root of a number.
SYNOPSIS
sqrt(number)
DESCRIPTION
This mathematical function computes the square root of a number defined in the real and positive plane. It returns a number y whose square is x, meaning that y multiplied by itself equals x. X needs always to be positive whereas y can be both positive or negative. However, the given answer will always be the positive value of y. Since the square root of a negative number equals a complex number, that is a real number plus an imaginary number, the latter being not defined for this function the user will receive Not a number as an answer.
PARAMETERS
- number
- Specify the number (float) used as argument for the sqrt function.
RETURN
- The square root value of the argument.
EXAMPLES
Note: In the followings examples, the _ between the { should be removed to make it work.
One can use this function with a variable :
test(q(res={_{
%include "/includes/extenso.sn";
a=4;
sqrt(a);
}}.),
q(res=2.));
With a trigonometric function:
test(q(res={_{
%include "/includes/extenso.sn";
a=cos(0);
sqrt(a);
}}.),
q(res=1.));
With a float:
test(q(res={_{sqrt(0.99);}}.),q(res=.994987.));
With big integers:
test(q(res={_{sqrt(45);}}.),q(res=6.7082.));
With an array:
test(q(res={_{sqrt(25,0,4);}}.),q(res=\[5,0,2\].));
But not with negative numbers:
test(q(res={_{sqrt(-4);}}.),q(res=NAN.));
SEE ALSO
{{ include("includes/maths.sn") }}
AUTHOR
Written by Caroline Laplante, <claplante@sednove.com>
MODIFICATIONS
1.0 2014-09-09 21:24:14 laplante@sednove.com
Edit
