已知4的m次方=8,16的n次方=6,求4的2m-4n+1次方的值
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2012-03-11
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4的2m-4n+1次方
=(4的2m次方)/(4的4n次方)*(4的1次方)
=(4的m次方的2次方)/(4的2次方的2n次方)*(4的1次方)
=(8的2次方)/(16的2n次方)*(4的1次方)
=64/(16的n次方的2次方)*4
=64/(6的2次方)*4
=64/36*4
=64/9
=(4的2m次方)/(4的4n次方)*(4的1次方)
=(4的m次方的2次方)/(4的2次方的2n次方)*(4的1次方)
=(8的2次方)/(16的2n次方)*(4的1次方)
=64/(16的n次方的2次方)*4
=64/(6的2次方)*4
=64/36*4
=64/9
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