Suppose that f(x)=|-3x+2| and g(x)=x+10 第一题solveSuppose that f(x)=|-3x+2| and g(x)=x+10第一题solve f(x)

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Suppose that f(x)=|-3x+2| and g(x)=x+10 第一题solveSuppose that f(x)=|-3x+2| and g(x)=x+10第一题solve f(x)

Suppose that f(x)=|-3x+2| and g(x)=x+10 第一题solveSuppose that f(x)=|-3x+2| and g(x)=x+10第一题solve f(x)
Suppose that f(x)=|-3x+2| and g(x)=x+10 第一题solve
Suppose that f(x)=|-3x+2| and g(x)=x+10
第一题solve f(x)

Suppose that f(x)=|-3x+2| and g(x)=x+10 第一题solveSuppose that f(x)=|-3x+2| and g(x)=x+10第一题solve f(x)

第一题
因f(x)=0,故g(x)>=0, 即 x+10>=0, x>=-10
第二题
因 f(x)=g(x),故, |-3x+2|=x+10。两种情况, (-3x+2)>=0, 则 (-3x+2)=x+10, x=-2; 第二情况, (-3x+2)<0, 则 -(-3x+2)=x+10, x=6;所以解为:x1=-2, x2=6
第三题
因 f(x)大于等于g(x),即 g(x)<0, 或(x+10)<0, x<-10

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