Find the radius of convergence for:
∑
n
=
1
∞
(
3
x
)
n
n
\displaystyle {\sum_{{{n}={1}}}^{{\infty}}}\frac{{\left({3}{x}\right)}^{{n}}}{{n}}
n
=
1
∑
∞
n
(
3
x
)
n
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\displaystyle
Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity