SOLUTION: find sum of series a - (a + d) + (a + 2d) - (a + 3d) + ----- (2n + 1) terms

SOLUTION: find sum of series a - (a + d) + (a + 2d) - (a + 3d) + ----- (2n + 1) terms

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Question 621645: find sum of series a - (a + d) + (a + 2d) - (a + 3d) + ----- (2n + 1) terms
Answer by lynnlo(4176) (Show Source): You can put this solution on YOUR website!
-2d+2n+1
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