Math Is Fun Forum

  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 Re: Help Me ! » Tough equation to differentiate » 2009-11-20 04:22:14

Ok simplyjasper please post your method but I almost had it using soroban's method.

#2 Re: Help Me ! » Tough equation to differentiate » 2009-11-20 04:01:50

Many thanks and impressive work. Take that nap now wink

#3 Help Me ! » Tough equation to differentiate » 2009-11-20 02:19:20

BeachRum1962
Replies: 5

I am trying to differentiate the following equation:

B(t) = B*/(1+be^-at)  that is be raised to -at.  a & b are parameters.  The correct answer is as follows:

dB(t)/dt = aB(t)[1-(B(t)/B*)]

Please help, I have been working hours using chain rule product rule, substituting, etc. but to no avail. Thanks.

Board footer

Powered by FluxBB