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anonymous
 5 years ago
Ex cause me, how can I solve this equations ?
3^(x1)= 5^(x2)
anonymous
 5 years ago
Ex cause me, how can I solve this equations ? 3^(x1)= 5^(x2)

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0did you see your previous post? Are you going to solve by graphing?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0start with \[(x1)\ln(3)=(x2)\ln(5)\] and then do a raft of algebra

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[\ln(3)x\ln(3)=\ln(5)x2\ln(5)\] \[ln(3)x\ln(5)x=\ln(3)2\ln(5)\] \[(\ln(3)\ln(5))x=\ln(3)2\ln(5)\] \[x=\frac{\ln(3)2\ln(5)}{\ln(3)\ln(5)}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0check my algebra because is is early and i could have made a mistake. also don't fret if this is not the answer in the back of the book because there are many ways to write this using the properties of the log

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0you will also notice that this is an answer only a math teacher could love, because it doesn't really tell you what the number is at all, just writes in terms of logs. if you want an actual decimal approximation, do what meverette suggested and graph
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