Teaching DSSSB TGT Mock Test 2025 Mathematics Sequences and Series

The series \(\sum {\frac{n^2-1}{n^2+1}x^2},x>0\) is

1
convergent for x ≥ 1
2
convergent for x > 1
3
divergent for x ≥ 1
4
divergent of x >1
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