so ln(1+x) = x - x^2/2 + x^3/3 - x^4/4 .... i know for ln(1+x^2) i just need to sub x^2 where x is so = x^2 - x^4/2 + x^6/3 .... what about ln(1+x^2/4) ? can i do the same thing and just sub so x^2/4 - x^4/32 + x^6/192 ... or do i need to use integration to find this power series?