20 12 how to do the math model 2 13 of the college entrance examination in dongcheng district?
It can be simplified as: 1-sinx/|x|+ 1, which is a fill-in-the-blank question. Let's do it according to the method of filling in the blanks: for sinx/|x|+ 1, we know that this is a odd function, and the sum of the maximum value and the minimum value must be 0, so the total maximum value plus the minimum value is 2.