Question Statement:
According to D'Alembert's ratio test, if $L = \lim_{n \to \infty} \left|\frac{a_{n+1}}{a_n}\right|$, the series $\sum a_n$ diverges when:
Options:
- (A) $L > 1$
- (B) $L < 1$
- (C) $L = 1$
- (D) $L = 0$
Section 1: Engineering Mathematics
Subtopic: Sequences and series – infinite series, tests for convergence
Options:
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