the graph of y=f(x) is concaved down over the interval (A,B)
ie f''(x)<0 for A=<x=<B
the tangent of the curve at point P(k,f(k)) meets lines x=A and x=B at P and Q respectively.
the value of k is such that the area bounded by the curve, the tangent and lines x=A and x=B is minimized.
Prove...
hi I'm new here hope you can help me with this problem
nuclei A decays to B and then to C(stable)
A and B have the same decay constant, n
Initially the amount of A is N(0)>0 while B and C are zero
then the amount of A at any time is :
N(t)=N(0)exp(-nt)
can somebody derive the equation for...