题目

I would appreciate ________ if I could have the ________ of giving a speech here. A . it; honour B . that; honour C . it; glory D . that; glory 答案:A 已知函数f(x)满足f(x)+(0)-e-x=-1,函数g(x)=-λlnf(x)+sinx是区间[-1,1]上的减函数. ①当x≥0时,曲线y=f(x)在点M(t,f(t))的切线l与x轴、y轴围成的三角形面积为S(t),求S(t)的最大值; ②若g(x)<t2+λt+1在x∈[-1,1]时恒成立,求t的取值范围; ③设函数h(x)=-lnf(x)-ln(x+m),常数m∈Z,且m>1,试判定函数h(x)在区间[e-m-m,e2m-m]内的零点个数,并作出证明.
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