[Tutor] in-built square root function
Ole Jensen
learning.python@dbmail.dk
Wed Feb 19 16:43:01 2003
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when experimenting alittle with pythons math functions I was puzzled =
concerning the results I get when trying to use the squareroot function =
(sqrt(x) according to the documentation found @ =
http://www.python.org/doc/current/lib/module-math.html)
my problem:
>>> import math
>>> sqrt(9)
Traceback (most recent call last):
File "<pyshell#14>", line 1, in ?
sqrt(9)
NameError: name 'sqrt' is not defined
>>>=20
If I have made a very stupid speeling mistake etc, Im sorry, but I can't =
really see what Im doing wrong!
I succesfully used the power function:
>>> pow(3,2)
9
>>>=20
So Im just wondering what Im doing wrong...
for now though I'll just stick with the power of 0.5 when finding the =
sqrt
thx for any info youve got
Ol=E9
ole_jensen@dbmail.dk
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<DIV><FONT face=3DArial size=3D2>when experimenting alittle with pythons =
math=20
functions I was puzzled concerning the results I get when trying to use =
the=20
squareroot function (sqrt(x) according to the documentation found @ <A=20
href=3D"http://www.python.org/doc/current/lib/module-math.html">http://ww=
w.python.org/doc/current/lib/module-math.html</A>)</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>my problem:</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>>>> import =
math<BR>>>>=20
sqrt(9)<BR>Traceback (most recent call last):<BR> File=20
"<pyshell#14>", line 1, in ?<BR> =
sqrt(9)<BR>NameError:=20
name 'sqrt' is not defined<BR>>>> </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>If I have made a very stupid =
speeling mistake=20
etc, Im sorry, but I can't really see what Im doing =
wrong!</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I succesfully used the power =
function:</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>>>> =
pow(3,2)<BR>9<BR>>>>=20
</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>So Im just wondering what Im doing=20
wrong...</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>for now though I'll just stick with the =
power of=20
0.5 when finding the sqrt</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>thx for any info youve got</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Ol=E9<BR><A=20
href=3D"mailto:ole_jensen@dbmail.dk">ole_jensen@dbmail.dk</A><A=20
href=3D"mailto:n@dbmail.dk"></A></FONT></DIV></BODY></HTML>
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