Mathematics
7 Online
OpenStudy (anonymous):
solve: 2^(x+1) = 3^(1-2x)
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
\[log_e both sides \]
\[xlog_e2 + log_e2 =log_e3 -2xlog_e3\]
Solve this
myininaya (myininaya):
\[\ln(2^{x+1})=\ln(3^{1-2x})\]
\[(x+1)\ln2=(1-2x)\ln3\]
\[xln2+\ln2=\ln3-2xln3\]
\[x(\ln2+2\ln3)=\ln3-\ln2\]
\[x=\frac{\ln3-\ln2}{\ln2+2\ln3}\]
OpenStudy (anonymous):
\[(x+1)\ln(2)=(1-2x)\ln(3)\] and now a bunch of algebra
OpenStudy (anonymous):
\[x\ln(2)+\ln(2)=\ln(3)-2x\ln(3)\]
OpenStudy (anonymous):
and now look above!
Join the QuestionCove community and study together with friends!
Sign Up
myininaya (myininaya):
\[x=\frac{\ln(\frac{3}{2})}{\ln2+\ln9}=\frac{\ln(\frac{3}{2})}{\ln(2 \cdot 9)}=\frac{\ln(\frac{3}{2})}{\ln18}\]
OpenStudy (anonymous):
myininaya, are you the type that writes
\[\ln3\] and
\[\sin x\]?
myininaya (myininaya):
?
OpenStudy (anonymous):
i will report you to the math police
OpenStudy (anonymous):
\[\sin(x),\ln(x)\]
Join the QuestionCove community and study together with friends!
Sign Up
myininaya (myininaya):
i do it both ways
OpenStudy (anonymous):
\[\frac{\ln6}{\ln3}=2\]
OpenStudy (anonymous):
yes?
myininaya (myininaya):
no
OpenStudy (anonymous):
why not? cancel the 3, cancel the ln
Join the QuestionCove community and study together with friends!
Sign Up
myininaya (myininaya):
\[\frac{\ln9}{\ln3}=2\]
OpenStudy (anonymous):
no
\[\frac{\ln 9}{\ln3}=3\]
myininaya (myininaya):
satellite why you always hating on me
myininaya (myininaya):
lol
OpenStudy (anonymous):
maybe, but if i have
\[\frac{\ln(9)}{\ln(3)}\] then i know it is 2. otherwise i just cancel the ln and the 3 to get 3
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
i like to give you a hard time, i will stop.
ok i won't
OpenStudy (anonymous):
"why you be hatin'?"
myininaya (myininaya):
ln by itself makes no sense
clearly when i say ln3
it also means ln(3)
OpenStudy (anonymous):
and when i say eggs i mean bacon
myininaya (myininaya):
no!
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
LOL