2^(1+0.5log(0.5)5) = 2 * 2^(0.5*log(0.5)5)
= 2*2^(0.5*log(2)(1/5)) (底数,指数同时乘以-1)
= 2*2^(log(2)(1/5)^0.5) (1/5开根号)
= 2*((1/5)^0.5)
= 2除以根号5
答案是多少 5分之根号2?
表述起来比较费劲~~~
该式子
=2^(1-1/2log(2)(5))
=2/(2^(1/2)*2^(log(2)(5)))
=2/((√2)*5)
=√2/5
2^(1+0.5log(0.5)5)
=
2
*
2^(0.5*log(0.5)5)
=
2*2^(0.5*log(2)(1/5))
(底数,指数同时乘以-1)
=
2*2^(log(2)(1/5)^0.5)
(1/5开根号)
=
2*((1/5)^0.5)
=
2除以根号5
3*3的log以3为底2的对数+10的lg9次方
看的懂不,前面是把1次方提出来,后面是把100的1/2次方变成10
然后就容易了
3的log以3为底2就是2
10的lg9次方就是9
3*2+9=15
解:原式=2×2的(㏒