20 14 college entrance examination science mathematics test 2 1 national new curriculum standard question 3, what do you think, as shown in the figure,
From the second question, let e (x/2) = m, and the derivative of g(x) can be obtained as: (m-1/m) 2 * {2 (m+1/m) 2-4b}, so that the derivative of g(x) is 0. 2,m 1=((2b)^0.5-(2b-4)^0.5)/2,m2=((2b)^0.5+(2b-4)^0.5)/2； If m 1