Y=4X-2+1/ï¼4X-5ï¼=ï¼4X-5ï¼+1/ï¼4X-5ï¼+3
âµX<5/4, â´4X-5<0
â´-[ï¼4X-5ï¼+1/ï¼4X-5ï¼]â¥2â[ï¼4X-5ï¼1/ï¼4X-5ï¼]=2
ï¼4X-5ï¼+1/ï¼4X-5ï¼â¤-2 ,
æ¤æ¶-ï¼4X-5ï¼=-1/ï¼4X-5ï¼ï¼x=1æ¶åçå·ã
æ以Y=ï¼4X-5ï¼+1/ï¼4X-5ï¼+3â¤-2+3=1.
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