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solve without using calculator
5ln(x2)2=28
help please, thank you
 one year ago
 one year ago
solve without using calculator 5ln(x2)2=28 help please, thank you
 one year ago
 one year ago

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Mimi_x3Best ResponseYou've already chosen the best response.3
\( 5ln(x2) = 30 \) \(ln(x2) = 6\) \(log_e(x2) = 6\) \((x2) = e^{6}\) Are you able to do it now?
 one year ago

youngmathBest ResponseYou've already chosen the best response.0
im stuck at the (x2)=e^6
 one year ago

Mimi_x3Best ResponseYou've already chosen the best response.3
bring the \(2\) to the RHS
 one year ago

youngmathBest ResponseYou've already chosen the best response.0
i know the answer is e^6 +2 but i dont know where the =2 comes from
 one year ago

Mimi_x3Best ResponseYou've already chosen the best response.3
Because when you bring the \(2\) to the RHS it's a positive
 one year ago

Mimi_x3Best ResponseYou've already chosen the best response.3
I don't know the correct way to say that lol
 one year ago

youngmathBest ResponseYou've already chosen the best response.0
alright can you walk me through the part after ln(x2)=6
 one year ago

Mimi_x3Best ResponseYou've already chosen the best response.3
Well you know that \(ln\) can also be written as \(log_e\) right?
 one year ago

youngmathBest ResponseYou've already chosen the best response.0
so you get e^6= (x2) right
 one year ago

Mimi_x3Best ResponseYou've already chosen the best response.3
yeah \((x2) = e^{6}\)
 one year ago

youngmathBest ResponseYou've already chosen the best response.0
so what do you do next
 one year ago

Mimi_x3Best ResponseYou've already chosen the best response.3
well i just told you before :)
 one year ago

youngmathBest ResponseYou've already chosen the best response.0
bring the 2 to the RHS?
 one year ago

youngmathBest ResponseYou've already chosen the best response.0
ooooohhhhhhhh xD duh x = e^6 + 2
 one year ago

Mimi_x3Best ResponseYou've already chosen the best response.3
yes; you dont really bring it was called something else which forgot. just simply drag it to RHS. But there is a better name for it lol
 one year ago

youngmathBest ResponseYou've already chosen the best response.0
i forgot i was solving for x , silly me
 one year ago

youngmathBest ResponseYou've already chosen the best response.0
i more last question what do you do for e^x3 = 16
 one year ago

Mimi_x3Best ResponseYou've already chosen the best response.3
\[ e^x  3 =16\] What have you tried?
 one year ago

Mimi_x3Best ResponseYou've already chosen the best response.3
Um, that is not right..
 one year ago

Mimi_x3Best ResponseYou've already chosen the best response.3
drag the \(3) to the rhs
 one year ago

youngmathBest ResponseYou've already chosen the best response.0
but its an exponent x3 is the exp. for e
 one year ago

Mimi_x3Best ResponseYou've already chosen the best response.3
Take ln both sides \[xlne = ln19\]
 one year ago

youngmathBest ResponseYou've already chosen the best response.0
the answer is ln(16)+3
 one year ago

Mimi_x3Best ResponseYou've already chosen the best response.3
Wolfram Alpha agrees with me http://www.wolframalpha.com/input/?i=+e%5Ex3+%3D+16
 one year ago

youngmathBest ResponseYou've already chosen the best response.0
my teacger myst be wring though . she gave me that answer
 one year ago

youngmathBest ResponseYou've already chosen the best response.0
my teacher was wron. she gave me that answer
 one year ago

Mimi_x3Best ResponseYou've already chosen the best response.3
well there is a low chance that wolfram alpha is wrong
 one year ago

m_charron2Best ResponseYou've already chosen the best response.0
oh, well, it looks like we have a paranthesis confusion here. when writing e^x3 = 16, it's important that you write the parantheses aroudnthe (x3), else we can't know that the whole thing is the exponant. So we have this right? \[e ^{x3} = 16\]
 one year ago
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