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Jan 21 2014 05:58am
Quote (Ylem122 @ Jan 21 2014 07:35am)
how did you get -3?


as far as I can tell (1/2)^ - 3 = .125


0.5^3=0.125 because you're cubing the half, ie., 0.5 x 0.5 x 0.5.

0.5^-3 > The negative causes you to "flip" the fraction, resulting in 0.5^-3=2^3=8.
In reality, this is because (1/2)^-3= 1 / [(1/2)^3] = 1/[1/8] = 8.

This post was edited by UsernamePending on Jan 21 2014 05:59am
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Jan 21 2014 08:46am
Quote (Ylem122 @ Jan 21 2014 04:35am)
as far as I can tell (1/2)^ - 3 = .125


(1/2)^ - 3 = 8, :P
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Jan 21 2014 08:51am
Quote (Terminatorfan12 @ Jan 21 2014 04:23am)
(1/2)^x=8


ln[(1/2)^x = ln(8)

x*ln(1/2) = ln(8)
x = ln(8)/ln(1/2)
x = [3*ln(2)]/[-ln(2)]
x = -3


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Jan 21 2014 09:49am
Quote (Azrad @ Jan 21 2014 10:51am)
ln[(1/2)^x = ln(8)

x*ln(1/2) = ln(8)
x = ln(8)/ln(1/2)
x = [3*ln(2)]/[-ln(2)]
x = -3


genius at math

helped me with stats n calc. now i can go on to a job and pretend i know stuff. :thumbsup:

This post was edited by noob_whacker on Jan 21 2014 09:49am
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Jan 21 2014 10:03am
Quote (noob_whacker @ 21 Jan 2014 15:49)
genius at math

helped me with stats n calc. now i can go on to a job and pretend i know stuff:thumbsup:


refreshing honesty :hail:

but don't tell you boss ;)
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Jan 21 2014 11:42am
Quote (noob_whacker @ Jan 21 2014 10:49am)
genius at math

helped me with stats n calc. now i can go on to a job and pretend i know stuff. :thumbsup:


this is what you learn in high school...
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Jan 21 2014 11:51am
homework help
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Jan 21 2014 03:02pm
Quote (noob_whacker @ Jan 21 2014 10:49am)
genius at math

helped me with stats n calc. now i can go on to a job and pretend i know stuff.  :thumbsup:


Simple pre calc =\
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