写出下面各数的倒数。1
2.5 2 
{#blank#}1{#/blank#}、{#blank#}2{#/blank#}、{#blank#}3{#/blank#}、{#blank#}4{#/blank#}、{#blank#}5{#/blank#}、{#blank#}6{#/blank#}、{#blank#}7{#/blank#}。
我发现:当a>1时,a的倒数{#blank#}8{#/blank#}1;当a=1时,a的倒数{#blank#}9{#/blank#}1;当a<1时,a的倒数{#blank#}10{#/blank#}1。(a是大于0的数)