I have 4 values 200,500,900,1400 lets say there x and y increases by 1 each time. I need the formula for this so i can program it.

I figured out that

(100*(x+1))

is the difference between the numbers just i cant get the rest...

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- September 14th 2008, 06:51 PMbotanicSimple exponential function
I have 4 values 200,500,900,1400 lets say there x and y increases by 1 each time. I need the formula for this so i can program it.

I figured out that

(100*(x+1))

is the difference between the numbers just i cant get the rest... - September 14th 2008, 10:13 PMbkarpuz
The values you gave come out froum the solution of the following difference equation:

Then, we have

By summing up from to , we get

Note that left-hand side of (*) is a telescopic series, hence we deduce that

...................._

...................._

or simply, we have

for all since .

I hope this is what you want. (Wink)