因为|a+1/a|>=2
所以(a+1/a)^2+(b+1/b)^2>=8>25/4
证明(a+1/a)2+(b+1/b)2大于等于25/4
证明(a+1/a)2+(b+1/b)2大于等于25/4
数学人气:960 ℃时间:2020-06-20 10:03:30
优质解答
我来回答
类似推荐
猜你喜欢
- 11、如方程X*X+KY*Y=2表示焦点在Y轴上的椭圆,实数K的取值范围?
- 2有哪些有关宽容的古诗句?
- 3在倾角为37°的足够长的斜面上,一个质量为2kg的物体由静止释放,受到的空气阻力与其速度成正比(f=Kv),最终物体匀速下滑的速度为2m/s.已知物体与斜面之间的动摩擦因数为μ=0.3,g取10m
- 4That is a desk .(改成复数)
- 5a=2010.12345678910111213……,a的小数点后第2010位数是几?
- 6已知实数a.b.c满足a^+b^=1,b^+c^=2,c^+a^=2,则ab+bc+ca的最小值为?
- 7He ran as fast as his short legs could carry him.
- 8Address Line 1和Address Line 2如何填写
- 9函数f(x)在[0,+∞)上是单调递减函数,f(x)≠0且f(2)=1,求函数F(x)=f(x)+1/f(x)在[0,2]上的单调性.
- 10The letter in the puzzle stands for the number 0 to 5.can you work it out.的意思