i cant think of an equation that will generate me 2, -4, 6, -8, 10, -12, and so on

the closest ive gotten is 2*n*(-1)^n

but tat gives me opposite of what i want

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- October 6th 2009, 06:27 AMIonSequence generation #2
i cant think of an equation that will generate me 2, -4, 6, -8, 10, -12, and so on

the closest ive gotten is 2*n*(-1)^n

but tat gives me opposite of what i want - October 6th 2009, 06:34 AMstapel
You're nearly there! Tweak the power on the negative one.... (Wink)

- October 6th 2009, 06:36 AMmathaddict