log2(4^x+1)>log(2^x+7)
所以
2(4^x+1)>(2^x+7)
2^(2x+2)>2^(x+7)
即
2x+2>x+7
x>7-2
x>5
解不等式log2(4^x+1)>log(2^x+7)
1个回答
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