1.7^(3/5),0.7^(-3/5),0.7^(3/5)比大小

问题描述:

1.7^(3/5),0.7^(-3/5),0.7^(3/5)比大小

将第二个数做个转换,就很好比较了,0.7^(-3/5)=(0.7^(-1))^(3/5)=(10/7)^(3/5)≈(1.43)^(3/5)
因此比较底数1.7>1.43>0.7,因此1.7^(3/5)>0.7^(-3/5)>0.7^(3/5)