steve at alchemy.com
Fri Jul 25 06:32:19 CEST 2008
To answer the specific question about square roots below, Python's
square root function is in the math module. You can either include this
module and invoke it like this:
y = math.sqrt(x)
-or- if you want the sqrt() function brought into your main namespace,
you can do it like this:
from math import sqrt
y = sqrt(x)
Either way, y will now have the value of the square root of x.
jar_head at fuse.net wrote:
>> Message: 9
>> Date: Thu, 24 Jul 2008 18:47:32 -0700 (PDT)
>> From: Sam Last Name <the_sam_smart at yahoo.com>
>> Subject: [Tutor] Newbie
>> To: tutor at python.org
>> Message-ID: <370291.77091.qm at web59515.mail.ac4.yahoo.com>
>> Content-Type: text/plain; charset="us-ascii"
>> mmmkay its me again
>> Iv'e been learning alot and have found so much joy in making programs that solve equations using the input function.
>> I need Help on this though.
>> Im trying to make a program where it solves the quadratic formula when you put in the variables.
>> Here wats i got so far. :) and also, is there a function for square root?
>> a = input("What is the variable a?")
>> b = input("What is the variable b?")
>> c = input("What is the variable c?")
>> # this is where i need help :(
>> print -b + /sqrt (b*b - 4*a*c)/(2*a)
>> # this of course doesn't work i believe because i don't have the square root function and don know how to make one
>> Feedback appreciated :)
> You're going to need to use your parenthesis differently. You might have a problem with the grouping if you leave it as it is. It'd be better written as this:
> print (-b + /sqrt ((b*b) - (4*a*c))/(2*a))
> I don't know the function for square root either, but I'm sure one of the others will answer that for you.
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