SOLUTION: My pharmacology book gives the following equation for drug concentration at time t, C(t): C(t) = C(0)exp(-CL/V)t Taking logarithms, the authors arrive at: lnC(t) = lnC

Algebra ->  Logarithm Solvers, Trainers and Word Problems -> SOLUTION: My pharmacology book gives the following equation for drug concentration at time t, C(t): C(t) = C(0)exp(-CL/V)t Taking logarithms, the authors arrive at: lnC(t) = lnC      Log On


   



Question 483069: My pharmacology book gives the following equation for drug concentration at time t, C(t):
C(t) = C(0)exp(-CL/V)t
Taking logarithms, the authors arrive at:
lnC(t) = lnC(0) - (-CL/V)t
Wouldn't it be PLUS (-CL/V)t, since C(0) is multiplied with e^(-CL/V)t ?

Found 2 solutions by Alan3354, solver91311:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
C%28t%29+=+C%280%29%2Ae%5E%28-CL%2FV%29t
-----------------
ln%28C%28t%29%29+=+ln%28C%280%29%29+%2B+%28-CL%2FV%29%2AT
ln%28C%28t%29%29+=+ln%28C%280%29%29+-+%28CL%2FV%29%2AT
-----------------
The exponent is negative.

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Either that or

John

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