a=00.0(100个0) b=00.0(99个0) 那么axb=?
a=00.0(100个0) b=00.0(99个0) 那么axb=?
a=00....0(100个0)8 写错了,
b=00....0(99个0)225
那么axb=?
a=00....0(100个0)8 写错了,
b=00....0(99个0)225
那么axb=?
数学人气:557 ℃时间:2019-12-16 08:17:59
优质解答
答:a=0.0000(100个0)008=8×10^(-100-1)=8×10^(-101)b=0.0000(99个0)00225=2.25×10^(-99-1)=2.25×10^(-100)a×b=8×2.25×10^(-101-100)=20×10^(-201)=2×10^(-200)=2/10^(200)写错了,改一下a=00....0(100个0)8 b=00....0(99个0)225那么axb=?0的个数不包括小数点前面那个0吧?
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