6 messages · Page 1 of 1 (latest)
i found this
,, [ \overrightarrow{EA} - 3\overrightarrow{EC} = \overrightarrow{FA} - 3\overrightarrow{FB}. ]
admoon
,, [ \overrightarrow{EF} - 3\overrightarrow{EC} = - 3\overrightarrow{FB}. ]