Известно, что \(\displaystyle s\ge t\) и \(\displaystyle c\ge 0{\small ,}\) \(\displaystyle u\le 0{\small .}\) Определите знаки неравенств:
\(\displaystyle c\cdot s\) [?|≤|≥|=|>|<]\(\displaystyle c \cdot t\)
\(\displaystyle u\cdot s\) [?|≤|≥|=|>|<]\(\displaystyle u\cdot t\)