(1)求证:函数f(x)=x+ a x 是奇函数; (2)已知函数g(x)=x+ 1 x 在区间(0,1)上是单调减函数,在区间(1,+∞)上是单调增函数;函数g(x)=x+ 4 x 在区间(0,2)上是单调减函数,在区间(2,+∞)上是单调增函数;猜想出函数g(x)=x+ b 2 x ,(b>0),x∈(0,+∞)的单调区间; (3)指出函数h(x)=x+ 8 x ,x∈(-∞,0)在什么时候取最大值,最大值是多少.
【判断题】The exclusive right granted to a patentee, in most countries, is the right to prevent or exclude others from making, using, selling, offering to sell or importing the invention.
【简答题】Please write down the exact word or phrase according to the given meaning and first letter. s _______: a. better than average or than others of the same type