6.3×1/2÷(1.8+2.7×1/2) 0.56×(5/12-19/60+2.375)÷0.5
题目
6.3×1/2÷(1.8+2.7×1/2) 0.56×(5/12-19/60+2.375)÷0.5
(4/9×2.4+1.6×4/19)×4/5
答案
6.3×1/2÷(1.8+2.7×1/2)
=6.3×1/2÷(1.8+1.35)
=3.15÷3.15
=1
0.56×(5/12-19/60+2.375)÷0.5
=0.56×(1/10+2.375)÷0.5
=0.56×2.475÷0.5
=1.386÷0.5
=2.772
(4/19×2.4+1.6×4/19)×4/5
=4/19×(2.4+1.6)×4/5
=4/19×4×4/5
=64/95
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
最新试题
热门考点