If n denotes a number to the left of 0 on the number line such that the square of n is less than ~$\frac{1}{100}$~, then the reciprocal of n must be?
lessthan -10
between -10 and -1
between -1 and 0
between0 and 10
greaterthan 10
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变成倒数,符号要变!!!!
n>-1/10 n
n denotes a number to the left of 0 on the number line :在0左边的数……to the left
n denotes a number to the left of 0 on the number line:n是负数。 the square of n is less than 1/100:即n的绝对值小于1/10所以n大于负的1/10。 问:n的倒数的取值
求出来范围是(-0.1,0)倒数求错了。
变成倒数,符号要变!!!!
n>-1/10 n
n denotes a number to the left of 0 on the number line :在0左边的数……to the left
n denotes a number to the left of 0 on the number line:n是负数。
the square of n is less than 1/100:即n的绝对值小于1/10所以n大于负的1/10。
问:n的倒数的取值
求出来范围是(-0.1,0)倒数求错了。