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C4 Vectors Question

Need help on this question, what is a scalar parameter? ImageUploadedByStudent Room1464031334.997602.jpg


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Reply 1
Avatar for Zacken
Zacken
22
Original post by TSRforum
Need help on this question, what is a scalar parameter? ImageUploadedByStudent Room1464031334.997602.jpg


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Fancy word for "real numbers" that, as you vary them, gives you the position vectors of points on the line.
Reply 2
Avatar for Ano123
Ano123
15
The line AB with be perpendicular to both l1 and l2 l_1 \text{ and } l_2 . Use properties of the scalar product for perpendicular lines to solve for λ and μ \lambda \text{ and } \mu 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).
(edited 7 years ago)
Reply 3
Avatar for Nayzar
Nayzar
16
vector= magnitude(quantity)+direction
Scalar=magnitude only
parameter=thing
Reply 4
Avatar for Nayzar
Nayzar
16
it just means that they represent simple numbers
Reply 5
Avatar for TSRforum
TSRforum
OP
7
Is this stuff in the OCR spec? I got it from a Edexcel paper, never came across it before. :/


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Reply 6
Avatar for Zacken
Zacken
22
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?
Reply 7
Avatar for TSRforum
TSRforum
OP
7
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 :frown:


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Reply 8
Avatar for Nayzar
Nayzar
16
either that or its just taught in a different way in ocr. i do edexcel not ocr btw

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