Deriving the eq internal path length best case

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zulfi100

Joined Jun 7, 2012
633
Hi,
I want to derive the eq for internal path length best case:

[tex]path_{best} = h-2[/tex]
i.e path (subscript: best) = h-2

They have started from
[tex]\sum_{i=1}^{h-1} i*2^i[/tex]
i.e Summation(i=1 to h-1) i * 2i

Some body please guide me.

Zulfi.
 

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