[填空题]
The values of the functiowlbi4-w,3cng p4 ,eyhns f and g and theilx 8 dn)0vza3kr derivatives for x=2,x=3 and x=6 are shown in the fkdl8xzv0 )an 3ollowing 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 .
