Verifying the Sum of an Arithmetic Progression: Is it -(p+q) or +(p+q)?

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SUMMARY

The discussion centers on the verification of the sum of an arithmetic progression (AP) when the sum of p terms is q and the sum of q terms is p. The original assertion states that the sum of p+q terms results in -(p+q), while the participant's calculations yield +(p+q) along with an additional term p*q*d, where d represents the common difference. This discrepancy highlights the need for a thorough examination of the formulas used in calculating sums of arithmetic progressions.

PREREQUISITES
  • Understanding of arithmetic progression (AP) concepts
  • Familiarity with the formula for the sum of an arithmetic progression
  • Basic algebraic manipulation skills
  • Knowledge of common differences in sequences
NEXT STEPS
  • Review the formula for the sum of the first n terms of an arithmetic progression
  • Explore the derivation of the sum of p+q terms in an arithmetic progression
  • Investigate the implications of common differences in arithmetic sequences
  • Practice solving problems involving sums of arithmetic progressions with varying parameters
USEFUL FOR

Mathematicians, educators, students studying sequences, and anyone interested in the properties of arithmetic progressions.

phymatter
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my book says that if sum of p terms of an ARTHMETRIC PROGRESSION is q and sum of q terms is p , then sum of p+q terms will be -(p+q) , but i am getting it as +(p+q),
can someone verify it ?
 
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Can you post your work?

Just messed around with it for a couple minutes and I got p+q+p*q*d where d is the common difference.
 

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