The Student Room Group

Alternative answer?



Is it possible to take only the 2 (in front of the ln) and raise it as a power (leaving the negative sign where it is) to get:

-ln|1-x|2 + ln|³√(2-3x)| + c

-ln|(1-x)2(³√2-3x)| + c

I mean is the above still a correct alternative answer to the one the book has given?
Reply 1
You cannot do this, you can only use the rule for adding logs together when the constant infront of each log is the same, in this case one of the constants is 1 and the other is -1 so you cannot do this.
Reply 2
Original post by james22
You cannot do this, you can only use the rule for adding logs together when the constant infront of each log is the same, in this case one of the constants is 1 and the other is -1 so you cannot do this.


Oh ! But is it still possible to take only the 2 (in front of the ln) and raise it as a power (leaving the negative sign where it is) right? (disregarding the fact that it wouldn't give the correct answer.)
Reply 3
Original post by sabre2th1
Oh ! But is it still possible to take only the 2 (in front of the ln) and raise it as a power (leaving the negative sign where it is) right? (disregarding the fact that it wouldn't give the correct answer.)


Yes you can do that and it would give you a correct answer, just not in its simplest form.
Reply 4
Original post by james22
Yes you can do that and it would give you a correct answer, just not in its simplest form.


Thanks! :biggrin:

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