[填空题]
Let $ f(x)=\frac{\ln (x+2)}{2}$, for x>-2. The diagram below shows part of the graph of f .
1. Find the coordinates of:
1. the x -intercept; (a,b) a = b =
2. the y -intercept.(a,b) a = b =
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. A ≈
