[填空题]
$\text { Let } f(x)=\frac{\ln (x+2)}{2} \text {, for } x>-2 \text {. The diagram below shows part of the graph of } f \text {. }$
1. Find the coordinates of:
a. the x -intercept; x =
b. the y -intercept. y =
2. Find the equation of the vertical asymptote to the graph of f .x =
3 . Find the area of the region enclosed by the graph of f , the x -axis and the y -axis.
