6.
![](https://www.ebk.net.cn/tikuimages/2/2018/500/shoutiniao66/2d6afda5db5147acbe99defc524f1d34.png)
如图,在\(\triangle ABC\)的边\(AB\)、\(AC\)上分别取点\(M\)、\(N\),使\( \overrightarrow{AM}= \dfrac {1}{3} \overrightarrow{AB}, \overrightarrow{AN}= \dfrac {1}{2} \overrightarrow{AC}\),\(BN\)与\(CM\)交于点\(P\),若\( \overrightarrow{BP}=λ \overrightarrow{PN}\),\( \overrightarrow{PM}=μ \overrightarrow{CP}\),则\( \dfrac {λ}{\mu }\)的值为\((\) \()\)