-x+2x-3x+4x...-2011x+2012x=2
-x+2x-3x+4x...-2011x+2012x=2
數(shù)學(xué)人氣:589 ℃時(shí)間:2020-06-14 01:08:40
優(yōu)質(zhì)解答
這嘛 拆一下項(xiàng)就可以啦-x+2x-3x+4x.-2011x+2012x 數(shù)數(shù)有幾項(xiàng)用2除以它就是啦這是方法 相信你應(yīng)該匯算拉同時(shí)這也只是一道觀察題能夠看到這兒就說(shuō)明你會(huì)做啦那答案是多少共1006個(gè)x=1/503
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