[问答题]
The following diagram sh
w z/.qj71,/q n*hqeiixwy4g;kjx0 ,m teud e, (vrinv-m:6 w rqn- c:kows the graph of f ′ , the derivative of f.
The graph of has a local maximum at A , a local minimum at B and passes through .
1. The point lies on the graph of the function f .
1. Write down the gradient of the curve of f at Q .
2. Find the equation of the normal to the curve of f at Q .
2. Determine the concavity of the graph of f when 2