若向量 $\stackrel{\rightharpoonup }{a},\stackrel{\rightharpoonup }{b}$满足 $\left|\stackrel{\rightharpoonup }{a}\right|=\left|\stackrel{\rightharpoonup }{b}\right|=1$， $\stackrel{\rightharpoonup }{a},\stackrel{\rightharpoonup }{b}$的夹角为60°，则 $\stackrel{\rightharpoonup }{a}·\stackrel{\rightharpoonup }{a}+\stackrel{\rightharpoonup }{a}·\stackrel{\rightharpoonup }{b}$=；