Current location - Training Enrollment Network - Mathematics courses - Are there any high school math experts? Write the whole process of the third question on paper and send it to me! ! !
Are there any high school math experts? Write the whole process of the third question on paper and send it to me! ! !
The f(x) image is as follows:

Divide f(x) into two sections, x; 0, set to g(x), so the solution required by the topic is the intersection of h(x)=x and f(x) and g(x), as shown in the above figure.

So the solution set is {-2,2}