A. 非奇非偶函数.
B. 既是奇函数也是偶函数;
C. 奇函数;
D. 偶函数;
函数 f(x)=log_(a)(x+sqrt(x^2)+1) (a>0,aneq1) 是( )A. 偶函数;B. 非奇非偶函数.C. 奇函数;D. 既是奇函数也
函数=x+sqrt (1-x)的极值为( )=x+sqrt (1-x)=x+sqrt (1-x)=x+sqrt (1-x)=x+sqrt (1-
【例11】证明:当x>0时, 1+xln(x+sqrt(1+x^2))>sqrt(1+x^2).【例11】证明:当x>0时,$ 1+x\ln(x+\sqrt{1
求lim _(xarrow infty )dfrac (ln (x+sqrt {{x)^2+1)}-ln (x+sqrt ({x)^2-1})}({({e)^d
(1) =ln (x+sqrt ({x)^2+1})
(2) (x)=ln (x+sqrt (1+{x)^2});
4.判别下列函数的奇偶性:-|||-(1) =ln (x+sqrt ({x)^2+1})-|||-(2) =F(x)(dfrac (1)({a)^x-1}+df
求极限 lim _(xarrow +infty )dfrac (ln (x+sqrt {{x)^2+1})-ln (x+sqrt ({x)^2-1})}( l
(11) =ln (x+sqrt (1+{x)^2}) ;
注 类似地,可以求极限lim_(xto+infty)((1)/(x)cdot(a^x-1)/(a-1))^(1)/(x)(a>0,aneq1).注 类似地,可以