2<x & lt=5 and not equal to 3 Test sites: The denominator cannot be zero, and it should be greater than or equal to zero under the root sign and greater than zero under ln.

X>3 or X.

X>- 1 test center: let t = e x- 1 and calculate f (t) = (ln (t+1)) 2+1.

X>2 or x

C test site: the range of lnx is [0, 1] to find the range of x.

D test center: the domain of t is (0, 1), and the range of ln(t) is found.