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### Transcript

• 1. Form 4 [simultaneous equation vs. vector]<br />We use simultaneous equation when we have two unknown to solve. <br />In vector, usually we use simultaneous equation when we have to find the two constant in the two different vector.<br />
• 2. Example:<br />Example of simultaneous equation. <br />Subtitude (1) into (2) <br />
• 3. Substitute into (1)<br />
• 4. In the diagram, PQRS is a quadrilateral. PR and QS is a diagonal of the quadrilateral intersection at T. point u lies on PS. It is given that , , and .<br />Given that and where <br />m and n are constant, find the value of m and of n.<br />S<br />R<br />T<br />u<br />P<br />Q<br />Solution:<br />Example of vector.<br />
• 5. Given, <br />Substitute (2) into (1),<br />We use substitute method in simultaneous equation.<br />