Question

find the dot product v⋅w:
for v=3i+4j, w=4i+3j

Answer 1

\[\vec{u}=(u_{\mu})=(u_1,u_2,...u_n); \vec{v} = (v_{\mu})=(v_1,v_2,...,v_n) \implies \]\[\vec{u} \cdot \vec{v}= \sum_{\mu}u_{\mu}v_{\mu}=u_1 v_1 + u_2 v_2 +...u_n v_n\]

Answer 2

i cant read that?