blike Posted March 17, 2003 Share Posted March 17, 2003 How do I solve ©? Also, can someone post the derivative, just to check my answer? Link to comment Share on other sites More sharing options...
blike Posted March 18, 2003 Author Share Posted March 18, 2003 just one bump Link to comment Share on other sites More sharing options...
fafalone Posted March 18, 2003 Share Posted March 18, 2003 it should just be N'(t) written as a percent. Link to comment Share on other sites More sharing options...
blike Posted March 18, 2003 Author Share Posted March 18, 2003 ok Link to comment Share on other sites More sharing options...
blike Posted March 18, 2003 Author Share Posted March 18, 2003 for part a, i don't understand if I should take the derivative, THEN plug in 10 and t=0, or if i should just use the equation given... Link to comment Share on other sites More sharing options...
fafalone Posted March 18, 2003 Share Posted March 18, 2003 Don't use the derivative at all for part a. Link to comment Share on other sites More sharing options...
Roark Posted March 19, 2003 Share Posted March 19, 2003 I think I got it but I want to dbl-check. When do you need it? Link to comment Share on other sites More sharing options...
blike Posted March 19, 2003 Author Share Posted March 19, 2003 i needed it earlier tonight, its all good though. just out of curiosity, what did you get for b,c,d? Link to comment Share on other sites More sharing options...
JaKiri Posted March 21, 2003 Share Posted March 21, 2003 b. Whatever the value of 2000*199*e^-5 / (1 + 199*e^-5)^2 is. c. % rate of change = (rate of change/total number so far) * 100% = N'(t)/N(t) * 100% = [2000*Ce^-t/(1+*Ce^-t)^2]/[2000/(1+Ce^-t)] * 100% = Ce^-t/(1+Ce^-t) * 100% = 19900e^-t/(1+199e^-t)% d. 1+199e^-t = 19900e^-t 19701e^-t = 1 e^-t = 1/19701 t = ln 19701 = 10 days (0dp) Link to comment Share on other sites More sharing options...
blike Posted March 21, 2003 Author Share Posted March 21, 2003 Thank you so much!!! Link to comment Share on other sites More sharing options...
Radical Edward Posted March 21, 2003 Share Posted March 21, 2003 MrL is our resident maths b**** now. ask him simple arithmetical questions and he will obey sell out Link to comment Share on other sites More sharing options...
JaKiri Posted March 21, 2003 Share Posted March 21, 2003 Originally posted by Radical Edward MrL is our resident maths b**** now. ask him simple arithmetical questions and he will obey sell out Yo bitch, burn some magnesium or whatever you chemists do. Link to comment Share on other sites More sharing options...
blike Posted March 21, 2003 Author Share Posted March 21, 2003 burn some magnesium or whatever you chemists do. bahahahahaha Link to comment Share on other sites More sharing options...
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