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mediumDifficulty: mediumΣ Sequences & Series·18 pts·1 solved

Alternating Harmonic Series

Problem Statement

∑n=1∞(−1)n+1n\sum_{n=1}^{\infty} \frac{(-1)^{n+1}}{n}n=1∑∞​n(−1)n+1​

Your Answer (variable: x)

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Tips

  • Use standard math syntax: ^ for powers, * for multiplication.
  • Functions: sin, cos, tan, exp, log (natural log), sqrt.
  • Constants: pi, e.
  • For antiderivatives you can omit "+ C".