# Sequences and Series Question

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## Grade 11 Sequences and Series CCSS: HSA-SSE.B.4

- No, this correct as is.
- Yes, this derivation is only valid for [math]a>0[/math].
- Yes, the formula found is only true if [math]|r|<1[/math].
- Yes, it must be stated that [math]r!=1[/math].