I need Help with a log question | Mathematics | Page 1

outer ermine Sep 17, 2023, 5:04 PM

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Basically i solved it algebraically but everyone keeps saying its wrong..

is it correct?

loud gardenBOT Sep 17, 2023, 5:04 PM

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ruby flame Sep 17, 2023, 5:22 PM

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outer ermine Sep 17, 2023, 5:22 PM

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ightr wait

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mb

ruby flame Sep 17, 2023, 5:22 PM

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,rotate:

reef gateBOT Sep 17, 2023, 5:22 PM

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outer ermine Sep 17, 2023, 5:22 PM

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better?

ruby flame Sep 17, 2023, 5:22 PM

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wow

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much better lol

outer ermine Sep 17, 2023, 5:23 PM

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xD

ruby flame Sep 17, 2023, 5:26 PM

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tbh that looks good except for one thing

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your x2 . . . from solving that quadratic

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the one subtracting the root

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is not a valid solution

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because in the log(x-2)

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you can't take the log of a negative number

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can't read if u mentioned that or not at the bottom

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but x1 would be valid

outer ermine Sep 17, 2023, 5:32 PM

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hmm can you solve it?

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cuz im shit at comprehending shit thats text based

outer ermine Sep 17, 2023, 5:35 PM

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ruby flame you can't take the log of a negative number

thats why i added ext

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extraneous solution

ruby flame Sep 17, 2023, 5:37 PM

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ah yeah ok

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also for the x2( even tho its not a valid solution) it looks like u wrote -2 instead of -3

ruby flame Sep 17, 2023, 5:39 PM

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outer ermine hmm can you solve it?

yeah I did and i got the same solution as your x1

outer ermine Sep 17, 2023, 5:40 PM

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ruby flame also for the x2( even tho its not a valid solution) it looks like u wrote -2 ins...

my shit handwriting

ruby flame Sep 17, 2023, 5:41 PM

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the function log(x-2) + log(x+5) would only ever have one solution anyway

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so it makes sense u only get one

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for any y

outer ermine Sep 17, 2023, 5:42 PM

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alright thanks 🙂

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what grade are you in?

ruby flame Sep 17, 2023, 5:42 PM

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👍

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Lol I've transcended

outer ermine Sep 17, 2023, 5:43 PM

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sheeesh..

ruby flame Sep 17, 2023, 5:43 PM

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Im in uni

outer ermine Sep 17, 2023, 5:43 PM

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nice 🙂 im in gr 11 😭

ruby flame Sep 17, 2023, 5:46 PM

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ah ... yeah I remember grade 11 doing precal :P

outer ermine Sep 17, 2023, 5:46 PM

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im doing calc/pre

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ill be doing calc in term 2

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but i took dericatives and itegrals

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integ*

ruby flame Sep 17, 2023, 5:51 PM

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ah yeah, limit definition of the derivative and all that... tbh in uni we did that first year, when I took calculus a lot of it was just review . . .

gloomy tartan Sep 17, 2023, 6:54 PM

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Hello

#I need Help with a log question