[填空题]
The values of the functions f and g and their derivativd3pbdpnl:n-clwh8/p/x9 ty 2 es for x=2,x=9e cet k0w2dxw ,mb3h**)zidr3 and x=6 are shown in the followmtwh* k)2eeddzcbixw3 r 0 ,9*ing table.
1. Evaluate $\int_{2}^{3} g^{\prime \prime}(x) \mathrm{d} x$ .
2. Let $ k(x)=\frac{f(x)}{g(x)}$ . Find $k^{\prime}(2)$
3. Let h(x)=f(g(x)) . Find the equation of the tangent to h at x=6 .
