1: Let the set M={x|00).

(1) When a=2, find the monotonic interval of f(x);

(2) If the curve y=f(x) and the straight line y=1 have only two intersections, find the range of the value of a.

First of all, there shouldn't be anyone who won't, right?

It's really a giveaway.

Just two words, [derivation] will do.

If you don't even know how to ask for guidance, it can only be said that you don't work hard enough on weekdays, and it is estimated that you are learning water like Lin Bei in the past.

But now Lin Bei ......

With just one glance, you have a bamboo in your chest, and then with a stroke of the pen, the process answer jumps on the answer sheet.

[Solution (1), f(x) defines the domain as (0,+∞), because a>0 and a≠1, so f'(x)=(ax^(a-2)a^x-x^a*a^x*l

a)/(a^x)^2, and l

a≠0。 】

[When a=2, f'(x) =-xl.]

2(x-2/l

2)/2^x, so the monotonically increasing interval of f(x) is (0,2/l

2), the monotonically decreasing interval is (2/l

2，+∞)。 】

That's right.

The first question is as simple as that.

The solution that does not deviate from its origin is to seek derivation.

If you can't get it, then you will either fish in the ditch or in the deep sea on weekdays.

Needless to say, the kind that is full of blindness.

Relatively.

This second question is a bit more complicated, after all, it is a pull sub-question, which can eliminate most of the references.

But after Lin Bei glanced at it, a trace of disdain flashed in his eyes, "The second question in the finale, that's the difficulty??" ”