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# 1st order linear homo Difference eqn watch

1. is the no of cells in the petri dish on day 0
p is the fraction of cells which survive and split into 2
1-p is then the fraction of cells which die
each cell contributes on average 2d+0x(1-d) cell to the next gen
but why 0x? surely some cells would die rather than none?

so then

2. (Original post by will'o'wisp2)
is the no of cells in the petri dish on day 0
p is the fraction of cells which survive and split into 2
1-p is then the fraction of cells which die
each cell contributes on average 2d+0x(1-d) cell to the next gen
but why 0x? surely some cells would die rather than none?

so then

You talk about p, but your equation has d's, and you talk about x, but there is none - trying to confuse us?

It's not saying none die, only that they contribute nothing to the next day's count.

The next day consists of twice the number that split, , and none of the ones that don't split (as they die), . The second term is really completely redundant.
3. (Original post by ghostwalker)
You talk about p, but your equation has d's, and you talk about x, but there is none - trying to confuse us?

It's not saying none die, only that they contribute nothing to the next day's count.

The next day consists of twice the number that split, , and none of the ones that don't split (as they die), . The second term is really completely redundant.
ah whoops mistake the x is supposed to be a times >.> <.<

Oh right i get it now... thanks man

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