Y12_FurtherMaths
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For 6b it wants the derivative in terms of x but I dont know how to simplify my answer further (if it's correct). Also am I allowed to square root both sides to get y in terms of x?
https://imgur.com/a/XHJ0pL3
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Muttley79
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(Original post by Y12_FurtherMaths)
For 6b it wants the derivative in terms of x but I dont know how to simplify my answer further (if it's correct). Also am I allowed to square root both sides to get y in terms of x?
https://imgur.com/a/XHJ0pL3
You differentiated correctly but you need to look at other ways of simplifying it - use other trig relationships.
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Y12_FurtherMaths
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(Original post by Muttley79)
You differentiated correctly but you need to look at other ways of simplifying it - use other trig relationships.
I'm stuck, can you give me a pointer please?
edit: Nevermind I've got it thanks
Last edited by Y12_FurtherMaths; 3 months ago
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Muttley79
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(Original post by Y12_FurtherMaths)
I'm stuck, can you give me a pointer please?
edit: Nevermind I've got it thanks
Well done

I find if you put a problem down and come back to it then you often have another idea.
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Y12_FurtherMaths
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(Original post by Muttley79)
Well done

I find if you put a problem down and come back to it then you often have another idea.
I had to look up the relationship on google though. How are we supposed to know that though since it's not in our formula booklet and it's a 3 mark question?? Perhaps there is another way of working this out?
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Muttley79
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(Original post by Y12_FurtherMaths)
I had to look up the relationship on google though. How are we supposed to know that though since it's not in our formula booklet and it's a 3 mark question?? Perhaps there is another way of working this out?
You need to know more formulae than are in the booklet - or know how to get the ones you need from those in the booklet. You'll gain more experience the more questions you do
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Y12_FurtherMaths
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(Original post by Muttley79)
You need to know more formulae than are in the booklet - or know how to get the ones you need from those in the booklet. You'll gain more experience the more questions you do
Appreciate it thank you
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