解不等式 log1/2(X^-X-2)> log1/2(X-1)-1.
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![解不等式 log1/2(X^-X-2)> log1/2(X-1)-1.](/uploads/image/z/2549874-66-4.jpg?t=%E8%A7%A3%E4%B8%8D%E7%AD%89%E5%BC%8F+log1%2F2%28X%5E-X-2%29%3E+log1%2F2%28X-1%29-1.)
解不等式 log1/2(X^-X-2)> log1/2(X-1)-1.
解不等式 log1/2(X^-X-2)> log1/2(X-1)-1
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解不等式 log1/2(X^-X-2)> log1/2(X-1)-1.
log1/2(X^2-X-2)> log1/2(X-1)-1 log1/2(X^2-X-2)> log1/2(X-1)-log1/2(1/2) log1/2(X^2-X-2)> log1/2【(X-1)/(1/2)】(这变换是公式~……你知道吧~) 因为log1/2图像是单减的~∴X^2-X-2<(X-1)/(1/2) X^2-3X<0 所以0<X<3