解关于x的不等式log(x2+2)(3x2−2x−4)>log(x2+2)(x2−3x+2).
人气:400 ℃ 时间:2020-01-29 04:36:50
解答
由于x2+2>1,∴不等式log(x2+2)(3x2−2x−4)>log(x2+2)(x2−3x+2)可化为:3x2−2x−4>0x2−3x+2>03x2−2x−4>x2−3x+2⇒x2−3x+2>03x2−2x−4>x2−3x+2⇒x2−3x+2>02x2+x−6>0解得:x>2或x<-2故原不等式...
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