1. ## power series.

another power series problem. Need to find the interval of convergence,

1/(1-x^3)

can you take a look at this one please.

2. Originally Posted by rcmango
another power series problem. Need to find the interval of convergence,

1/(1-x^3)

can you take a look at this one please.
1/(1-x) = 1 + x + x^2 + ...

which is convergent inside the unit circle |x|<1,

so:

1/(1-x^3) = 1 + x^3 + x^6 + ... + x^{3n} + ...

which is convergent inside the unit circle |x|<1,

RonL