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AmTran_Bus
 one year ago
Please help me solve for k!
AmTran_Bus
 one year ago
Please help me solve for k!

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AmTran_Bus
 one year ago
Best ResponseYou've already chosen the best response.0dw:1433563190186:dw

AmTran_Bus
 one year ago
Best ResponseYou've already chosen the best response.0The book says k= 1/10 ln 3040/2560 But where did that come from?

AmTran_Bus
 one year ago
Best ResponseYou've already chosen the best response.0Is it just a plain ration between t and, well, k?

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1\[\Large\rm y(10)=2560e^{10k}=3040\]Apply log, then log rule :)

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1Err divide first, woops,\[\Large\rm \frac{3040}{2560}=e^{10k}\]

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1Log each side,\[\Large\rm \ln\left(\frac{3040}{2560}\right)=\ln\left(e^{10k}\right)\]

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1log rule,\[\Large\rm \ln\left(\frac{3040}{2560}\right)=10k\ln\left(e\right)\]Then uh, simplify...\[\Large\rm \ln\left(\frac{3040}{2560}\right)=10k\cdot 1\]ya?

AmTran_Bus
 one year ago
Best ResponseYou've already chosen the best response.0Yes. That is making some sense. So then, you have .178=10k

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1.1719* woops i think u missed a decimal value there.

AmTran_Bus
 one year ago
Best ResponseYou've already chosen the best response.0My bad! So, what do you do with the 10k?

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1solve for k 0_o 10 is multiplying the k, ya? do the inverse of multiplication to isolate your k

AmTran_Bus
 one year ago
Best ResponseYou've already chosen the best response.0I mean, it is set equal to it as is, but dont you plug it into k?

AmTran_Bus
 one year ago
Best ResponseYou've already chosen the best response.0Oh, your post above, sorry!

AmTran_Bus
 one year ago
Best ResponseYou've already chosen the best response.0James Stewart wrote some of these examples confusing!
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