How is the Sigma function used?I am trying to find the sum:

10

Sigma .5^x * .2 (= .399805)

x=0If understand the manual correctly, I am supposed to enter the counter in the x stack as ccc.fffiii:

So I would enter 0.01001? (final = 10, increment = 0, c = 0)

I am not getting the answer I expected. Please help.

Here is what I have:

LBL FF

.

5

x<>y

y^x

.2

x

RTN.01001 g [3] f [ENTER] FF ?? (I'm not getting what I am expecting, I get .2000)

Thanks in advance.