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# C4 Vectors Question

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1. Need help on this question, what is a scalar parameter?

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2. (Original post by TSRforum)
Need help on this question, what is a scalar parameter?

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Fancy word for "real numbers" that, as you vary them, gives you the position vectors of points on the line.
3. The line AB with be perpendicular to both . Use properties of the scalar product for perpendicular lines to solve for and hence find the coordinates.
Scalar just means a number, not a vector in this case basically. Parameter means that it is treated as a constant value but it is free to change (but it is fixed in any particular case- I find it quite difficult to define parameter).
4. vector= magnitude(quantity)+direction
Scalar=magnitude only
parameter=thing
5. it just means that they represent simple numbers
6. Is this stuff in the OCR spec? I got it from a Edexcel paper, never came across it before. :/

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7. (Original post by TSRforum)
Is this stuff in the OCR spec? I got it from a Edexcel paper, never came across it before. :/

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Do you not have vectors in OCR?
8. (Original post by Zacken)
Do you not have vectors in OCR?
Yes but I couldn't answer this with my notes, guess I have crappy notes

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9. either that or its just taught in a different way in ocr. i do edexcel not ocr btw

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