FP3:hyperbola Watch

Maths&physics
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#21
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#21
(Original post by RDKGames)
Discriminant*

I explained this in post #7. Are you struggling to make the connection from 'this quadratic has one solution' to 'discriminant must be zero' ?
I don't think you understand what I'm asking. where is the answer or the question, that's what they're asking?
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RDKGames
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#22
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#22
(Original post by Maths&physics)
I don't think you understand what I'm asking. where is the answer or the question, that's what they're asking?
Still don't understand what you're asking then.
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#23
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#23
(Original post by RDKGames)
Still don't understand what you're asking then.
how have they implied or explicitly asked that they're looking for the discriminant? because I cant see it in the question, nor post 7.
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#24
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#24
(Original post by Maths&physics)
how have they implied or explicitly asked that they're looking for the discriminant? because I cant see it in the question, nor post 7.
They implied they want the discriminant implicitly, as per the implications I said in post #7.

This is a standard technique you're supposed to know from C1, so it is assumed knowledge.
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#25
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#25
(Original post by RDKGames)
They implied they want the discriminant implicitly, as per the implications I said in post #7.

This is a standard technique you're supposed to know from C1, so it is assumed knowledge.
sorry, yeah, I get it now. there is only one variable (x) and m and c are constants. and the resultant equation of a parabola and the tangent equation of a line will only ever give you a quadratic and will only ever give you a discriminant of zero.
Last edited by Maths&physics; 1 week ago
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