Reindex the series to start at k=1?

∑∞k=10 (([k+2)(k+1)x^(k+1)])/k+3)=∑∞k=1 ...............

2 Answers

Relevance
  • rotchm
    Lv 7
    4 weeks ago
    Favorite Answer

    Hint: Let u = k-9. Then write all as an expression as u. Then let u=k.

    Show ur steps if need be and we can take it from there. 

    • munnaam4 weeks agoReport

      Thanks 
      the solution is ((k+11)(k+10)x^(k+10))/(k+12)

  • JOHN
    Lv 7
    4 weeks ago

    ∑∞k=1(([k+11)(k+10)x^(k+10)])/k+12)

Still have questions? Get your answers by asking now.