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Mathematics 15 Online
OpenStudy (anonymous):

ln(7x)=11

OpenStudy (lgbasallote):

change to log firm first \[\implies \log_e (7x) = 11\] change to exponential form \[\implies e^{11} = 7x\] divide bopth sides by 7 \[\implies \frac{e^{11}}{7} = x\] does that help?

OpenStudy (anonymous):

not really still confused

OpenStudy (lgbasallote):

where?

OpenStudy (anonymous):

Do you know how to work with logarithms with real number bases? IE: \[\log_{2}8 = 3\] Here "ln" simply means a logarithm with a base of 'e'.

OpenStudy (anonymous):

ok lemme try write both sides in the power of e \[\Large e^{\ln(x)}=e^{11}\] this is ok with you till now ?

OpenStudy (anonymous):

Thanks guys I think I've got it now.!

OpenStudy (anonymous):

yw:)

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