View Full Version : Help Math People!!
2.2vtec
07-27-2003, 12:06 PM
Is logx^2 equal to x plus logx??? If so why????
Thanks in advance!!
Super_Geo
07-27-2003, 12:14 PM
Do you mean
log(x^2) or (log x)^2 ?
Super_Geo
07-27-2003, 12:20 PM
Well, assuming the first one. No, it's not
log(x^2) = 2 log(x)
x + log(x) = log(x) + log(x)
x = log(x)
so it's not true.
Super_Geo
07-27-2003, 12:24 PM
The second one is not true either.
V6-BoI
07-27-2003, 12:26 PM
Originally posted by Super_Geo
Well, assuming the first one. No, it's not
log(x^2) = 2 log(x)
x + log(x) = log(x) + log(x)
x = log(x)
so it's not true.
wait a minute, I think one of your steps doesn't sense,
x + log(x) = log(x) + log(x)?
Super_Geo
07-27-2003, 12:28 PM
Originally posted by V6-BoI
wait a minute, I think one of your steps doesn't sense,
x + log(x) = log(x) + log(x)?
"x + log(x)" is what you're leaving on the left side to see if it equals the right side, which has become "log(x) + log(x)"
So really, I should have put:
x + log(x) ?= log(x) + log(x)
Oops
2.2vtec
07-27-2003, 12:30 PM
actually I made a mistake in the question...
the question is:
Is logx^2= log x +log x an identity??? let me know why or why not...
thanks
V6-BoI
07-27-2003, 12:31 PM
Oh ok I see I see
So yeah what Super_Geo says, the statement is false.
Super_Geo
07-27-2003, 05:09 PM
Yes, it is an identity.
log(x^2) = 2 log(x) = log(X) + log(x)
Seanith
07-27-2003, 06:30 PM
yeah its true like super_geo said :)
EstoMax
07-27-2003, 07:50 PM
why are you doing math during summer!
you are reminding me of school
aaaaaaaa :banghead: :banghead:
:)
summer class at college eh?
max
V6-BoI
07-27-2003, 08:08 PM
Originally posted by EstoMax
why are you doing math during summer!
you are reminding me of school
aaaaaaaa :banghead: :banghead:
:)
summer class at college eh?
max
Yeah I'm taking a descrete math course right now at the U, and it sucks ass, took me and 7 others 15 hours to do a friking assignment.
rice_eater
07-27-2003, 08:44 PM
if it was all like this then you're gonna have a tough time in university math...this shit is very basic IMO
Blue Devil 2
07-27-2003, 09:13 PM
Originally posted by EstoMax
why are you doing math during summer!
you are reminding me of school
aaaaaaaa :banghead: :banghead:
:)
summer class at college eh?
max
he does this shit for fun :(
Seanith
07-27-2003, 09:15 PM
hes a math nazi, but sucks at it :(
tommy1223
07-27-2003, 09:25 PM
MATH IS HORRIBLE!! IT'S EVIL!!!
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