Quote:
Originally Posted by batman  note 320/400=0.8 (=256/320=...). You thus find x_n = 0.8 x_(n-1), the closed form is then given by x_n = 400*(0.8)^(n-1).
Can you do the other exercise yourself now? |
Im not sure i understand the 320/400 part but am not sure of the formula you have given.
PLease help, thankyou so far!