assert 4**0.5 == 2 More generally: nth root of x: x ** (1.0/n)
Or even more generally, take the 3rd root of the square of x:
x ** (2.0/3.0)
And when we are already extending the scope of the mailing list to math
basics:
1.0/(x**2) == x**-2
(negating the power gives the inverse.)
Andreas
Am Donnerstag, den 13.03.2008, 18:02 -0700 schrieb Robert Childers:
> I am in an early lesson in "A Byte of Python." Instead of writing a
> program to find the area of a rectangle I thought it would be useful
> to write a program to determine the length of the diagonal of a
> "golden rectangle", which would of course equal the sq root of the sum
> of the squares of the width and height. Here is my program:
> >>> height = input ("Height:")
> Height:1
> >>> width = input ("Width:")
> Width:1.618
> >>> int = ((height**2) + (width**2))
> >>> print int
> 3.617924
> >>> hypotenuse * hypotenuse = int
> SyntaxError: can't assign to operator
>
> I looked ahead in the lesson and could find no mention of square
> roots. How do I find the square root of an integer?
> _______________________________________________
> Tutor maillist - Tutor@python.org
> http://mail.python.org/mailman/listinfo/tutor
signature.asc
Description: Dies ist ein digital signierter Nachrichtenteil
_______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
