m分之m+3-6分之m平方-9÷2分之m-3=
题目
m分之m+3-6分之m平方-9÷2分之m-3=
答案
=(m+3)/m-(m+3)(m-3)/6×2/(m-3)
=(m+3)/m-(m+3)/3
=[3(m+3)-m(m+3)]/(3m)
=(9-m²)/(3m)
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
- 一个圆柱体的体积是40立方米高4米这个圆柱的底面积是多少
- cure 和treat的区别的题目,感谢所有来访者!
- With the cooking_______,I went on ________ some sewing.非谓语动词
- _____ is know___ __ Thomas Edison invented the electric light.
- 英语改错:Then it will correct them but tell me the right answers.It is much convenient for me ...
- the shark is not______ we have imagined.sometimes it is kind of friendly to people
- 观察下面一列数字:1,-3,5,-7,9,-11,13……照此规律,第n个数是(
- 50道竖式计算题有过程有答案
- 在啤酒的制作过程中离不开酵母菌;酵母菌在氧气充足时能将葡萄糖分解成二氧化碳和水,使其周围环境的酸碱
- 当物体的速度发生变化时,其动能一定发生变化吗?