log(7) [ (14x-1) / (x-3) ] < 0 解不等式.log(7) [ (14x-1) / (x-3) ] < 0
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log(7) [ (14x-1) / (x-3) ] < 0 解不等式.log(7) [ (14x-1) / (x-3) ] < 0
log(7) [ (14x-1) / (x-3) ] < 0 解不等式.
log(7) [ (14x-1) / (x-3) ] < 0
log(7) [ (14x-1) / (x-3) ] < 0 解不等式.log(7) [ (14x-1) / (x-3) ] < 0
log(7) [ (14x-1) / (x-3) ] < 0
即(14x-1) / (x-3)>1
移项(14x-1) / (x-3)-1>1
通分(13x+2)/(x-3)>0
解得:x<-2/13或,x>3
结合3^x-1>0得3^x-1>=8或0<3^x-1<=2 从而x>=2或者1>=x>0 解对数不等式:[log 4 (3^x-1)]{log 1/4 [(3^x-1)/16]} ≦0
log(7) [ (14x-1) / (x-3) ] < 0
即(14x-1) / (x-3)>1
移项(14x-1) / (x-3)-1>1
通分(13x+2)/(x-3)>0
解得:x<-2/13或,x>3
log(7) [ (14x-1) / (x-3) ] < 0 解不等式.log(7) [ (14x-1) / (x-3) ] < 0
log(1/8)X
解不等式.log(7) [ (14x-1) / (x-3) ] < 0log7【(14x-1) / (x-3)】
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