1.6*0.25/4 递等式怎么算

问题描述:

1.6*0.25/4 递等式怎么算

原式
=1.6*1/16
=0.1

x所以3-x>0,x-5所以原式=(3-x)-(5-x)
=3-x-5+x
=-22x²-5x+2x-5=0
2x²-3x-5=0
(2x-5)(x+1)=0
x=5/2,x=-1

1.6*0.25/4
=0.4/4
=0.1