(1)已知根号19.99=4.471求根号0.001999+根号1999的值.(精确到0.01)
问题描述:
(1)已知根号19.99=4.471求根号0.001999+根号1999的值.(精确到0.01)
答
注:我用sqrt( x )表示x开平方因为sqrt(19.99) = 4.471,所以sqrt( 0.001999 ) = sqrt( 0.0001*19.99 ) = sqrt( 0.0001 ) * sqrt( 19.99 ) = 0.01 * 4.471 = 0.04471,同理可得sqrt( 1999 ) = 44.71,所以所求 = 44.71 +...