i havent been here for a while, but i know there are a lot of smart, sharp, stoners on here. i have my final tmrw, and there is one type of question i cant see to figure out how to properly do. this is the problem---solve for t 170 = 47 + 11ln(15t + 1), 123 =11ln(15t+1) i dont know what to do next or how. i know the answer, but dont know how to get it.
First, divide both sides by 11 to get 123/11=ln(15t+1) then make both sides powers of e e^(123/11)=e^[ln(15t+1)] this cancels the natural log e^(123/11)=15t+1 subtract 1 then divide by 15 to get t=[e^(123/11)-1]/15 Pretty sure that's the answer.
^ That's right. Remember, Logarithms are just a different notation for writing exponential functions. If you know how to convert the log into it's exponential equivalent, the problem becomes a piece of cake.