In order to find in :

By partial fractions i got

inside we have 2 geometric series

the series for is

and for we have

so the coeficients of are times

but the unswer is times

i did something wrong?

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- April 28th 2011, 10:46 AMhurzhelp in taylor series
In order to find in :

By partial fractions i got

inside we have 2 geometric series

the series for is

and for we have

so the coeficients of are times

but the unswer is times

i did something wrong? - April 29th 2011, 01:07 AMOpalg
You did not necessarily do anything wrong. Notice that , as you can check by multiplying out the fractions.

Incidentally, the coefficients in that power series are the Fibonacci numbers. - April 29th 2011, 02:41 AMFernandoRevilla
- April 29th 2011, 07:29 PMTheCoffeeMachine