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VTMO 2026 - Grade 9 - Semifinal - SET 07 - Self-study Question 25

VTMO · VTMO 2026 - Grade 9 - Semifinal - SET 07 - Self-study

Question 25

Let $f(x)=1+2x+3x^2+\cdots+2015x^{2014}$. Find $f(-1)$.
  1. 2014
  2. 1009
  3. 1008
  4. 1007
  5. -1007