solve the problems...(1)4^x + 2^x+1 -3 =0(2)log(1/3)x + 2log 9(x^2) -1 =0
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solvetheproblems...(1)4^x+2^x+1-3=0(2)log(1/3)x+2log9(x^2)-1=0solvetheproblems...(1)4^x+2^x+1-3=0(2)
solve the problems...(1)4^x + 2^x+1 -3 =0(2)log(1/3)x + 2log 9(x^2) -1 =0
solve the problems...
(1)4^x + 2^x+1 -3 =0
(2)log(1/3)x + 2log 9(x^2) -1 =0
solve the problems...(1)4^x + 2^x+1 -3 =0(2)log(1/3)x + 2log 9(x^2) -1 =0
1.设2^x为t,原式变为t^2+2t-3=0 => t=1 或t=-3(舍)
=> x=0;
2.原式变为,-log(3)x+2log(3)x-1=0 => x=3;
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