Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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Topic review (newest first)

bobbym
2013-03-11 20:21:22

That is okay. Glad you figured it out.

That is the answer mathematica gets too.

debjit625
2013-03-11 20:20:48

Sorry I was in hurry its will be -n .I edited it on the first post too...

Here is the answer



The problem was it just got out of my mind about multiplicative inverse i.e..


Thanks

debjit625
2013-03-11 20:19:10

Ok I just got it

,my bad

Solved the problem

bobbym
2013-03-11 20:18:15

Hi;

What happened to the n?

debjit625
2013-03-11 20:09:01

Find the sum of the following geometric series



I got an answer of


But the book gives an answer of


I think its a mistake ,it should be


Or am I wrong

Just want to be sure...

Thanks

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