Topic explanation

Standard explanation

Write i j k on top. Compute the three cofactors. Watch the minus in front of j. Practice one fully written expansion.

Key points

• minus on j
• ijk determinant mnemonic
• middle component has a minus
• one minus on j
• THE DETERMINANT: Write i j k on top. Compute the three cofactors. Watch the minus in front of j. Practice one fully w
• THE DETERMINANT: Write i j k on top.
• WHAT — THE DETERMINANT: Write i j k on top. Compute the three cofactors. Watch the minus in front of j. Practice one fully w
• WHY — Why it matters: This rule is a separate learning unit inside cross product in components. It can be defined, applied

Labelled diagram