解方程,I2x+3I-Ix-1I=4x-3\如题

解方程,I2x+3I-Ix-1I=4x-3\如题
解方程,I2x+3I-Ix-1I=4x-3
\如题

解方程,I2x+3I-Ix-1I=4x-3\如题
若x≥1 则2x+3-x+1=4x-3 -3x=-7 x=7/3 若-1.5≤x＜1 2x+3-1+x=4x-3 -x=-5 x=5 不合题意 舍去 若x＜-1.5 -2x-3-1+x=4x-3 -5x=1 x=-0.2 不合题意 舍去

①当x≥1时，I2x+3I-Ix-1I=4x-3.......=>2x+3-(x-1)=4x-3......=>x=7/3 ②当-3/2≤x＜1时，I2x+3I-Ix-1I=4x-3.....=>2x+3-[-(x-1)]=4x-3.....=>x=5 又∵x=5不在-3/2≤x＜1内，所以舍去 ③当x＜-3/2时，I2x+3I-Ix-1I=4x-3.....=>-(2x+3)-[-(x-1)]...

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①当x≥1时，I2x+3I-Ix-1I=4x-3.......=>2x+3-(x-1)=4x-3......=>x=7/3 ②当-3/2≤x＜1时，I2x+3I-Ix-1I=4x-3.....=>2x+3-[-(x-1)]=4x-3.....=>x=5 又∵x=5不在-3/2≤x＜1内，所以舍去 ③当x＜-3/2时，I2x+3I-Ix-1I=4x-3.....=>-(2x+3)-[-(x-1)]=4x-3......=>x=-7/5 又∵x=-7/5不在x＜-3/2内，所以也要舍去 综①②③所述，x=7/3

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