Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: Considera les rectes d'equacions: [begin mathsize 12px style bold r bold space bold identical to open curly brackets table row cell bold x bold equals end cell cell bold # bold a bold 1 bold plus bold # bold u bold 1 bold times bold k end cell row cell bold y bold equals end cell cell bold # bold a bold 2 bold plus bold # bold u bold 2 bold times bold k end cell end table close curly brackets bold space bold s bold space bold identical to bold space bold # bold italic e bold 21 bold space end style] A) CALCULA EL PRODUCTE ESCALAR DELS SEUS VECTORS DIRECTORS b) Esbrina si són perpendiculars: S per si, N per no.
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Question state: todo