[填空题]
Consider the function 06gfe 32lb 7ijnv9wj 3i oqh+c/k(yej wyz(,rk7 dh:h)z*g; hi pg ,je$ f(x)=\frac{4 x^{2}+p x}{x+1}$ , where $x \neq-1$ and $p \in \mathbb{R}$ .
Find the value of p for which the graph of f has exactly one point with a gradient of zero.
