# C3 TrigWatch

5 years ago
#21
(Original post by Khallil)
Really?

Spoiler:
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To find the smallest value of the given fraction, maximise the value of the denominator.

The maximum value of occurs at

The smallest value of the given fraction is:

0
5 years ago
#22
(Original post by IgorYakov)
30/-11
Yes

It is easy to fall into the trap of largest denominator gives smallest answer

But, of course, a negative is always smaller than a positive
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#23
(Original post by TenOfThem)
Yes

It is easy to fall into the trap of largest denominator gives smallest answer

But, of course, a negative is always smaller than a positive
Aah okay thanks a lot! The book has the answer of 2 so I think they made the same mistake
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5 years ago
#24
(Original post by IgorYakov)
Aah okay thanks a lot! The book has the answer of 2 so I think they made the same mistake
Are you sure that the question did not have a |magnitude| sign around the fraction
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#25
(Original post by TenOfThem)
Are you sure that the question did not have a |magnitude| sign around the fraction
Yeah, it's written in the book exactly how I wrote it in the OP

Is the magnitude sign the same if it's written as [magnitude] as it's in another question. If so, does this mean you only use the maximum or positive numbers?
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5 years ago
#26
(Original post by IgorYakov)
Yeah, it's written in the book exactly how I wrote it in the OP

Is the magnitude sign the same if it's written as [magnitude] as it's in another question. If so, does this mean you only use the maximum or positive numbers?
I was wondering if it had the |modulus| sign so +ve value

But, if there is nothing then the answer in the back of the book is wrong
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#27
(Original post by TenOfThem)
I was wondering if it had the |modulus| sign so +ve value

But, if there is nothing then the answer in the back of the book is wrong
Oh okay thanks!
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5 years ago
#28
(Original post by IgorYakov)
Yeah, it's written in the book exactly how I wrote it in the OP

Is the magnitude sign the same if it's written as [magnitude] as it's in another question. If so, does this mean you only use the maximum or positive numbers?
Are you sure there isn't a restriction on the values that can take?

(Original post by TenOfThem)
I was wondering if it had the |modulus| sign so +ve value

But, if there is nothing then the answer in the back of the book is wrong
Also, by smallest I suppose they mean closest to 0, but it should be the furthest to the left on the real line. Thank you for correcting me btw
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5 years ago
#29
(Original post by Khallil)
Are you sure there isn't a restriction on the values that can take?

Also, by smallest I suppose they mean closest to 0, but it should be the furthest to the left on the real line. Thank you for correcting me btw

If they mean closest to zero they should put |blah| but a better question would have had 20 rather than 2 so that both extremes give a +ve value
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