Try another version of this question Get help: Box 1: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4) Box 2: Enter your answer as letters. Examples: A B C, linear, a cat
Use your answer to help determine whether the series `sum_(n=2)^(oo) (1)/((7 n-1)^3)` converges or diverges. Enter C if the series is convergent, D if the series is divergent, or ? if the Integral Test does not apply:
Enter DNE for Does Not Exist, oo for Infinity