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c2 differentiation question need help watch

1. please can some explain what part c means
is it asking for the equation of the tangent
or whether the gradient is positive or negative

2. (Original post by bigmansouf)

please can some explain what part c means
is it asking for the equation of the tangent
or whether the gradient is positive or negative

Is this from the longmans edexcel book?
3. (Original post by SheLikeTheMango)
Is this from the longmans edexcel book?
yes it is this is part of the cd pdf files
this particular file is under the acceleration file for chapter 15 differentiation

4. (Original post by bigmansouf)
yes it is this is part of the cd pdf files
this particular file is under the acceleration file for chapter 15 differentiation

It's asking you to find the coordinates of the turning points. You need to differentiate that equation they gave you, which gives you the gradient function.

Since they ask you to find the coordinates when gradient is zero, you equate the differentiated function to zero and solve.
5. (Original post by SheLikeTheMango)
It's asking you to find the coordinates of the turning points. You need to differentiate that equation they gave you, which gives you the gradient function.

Since they ask you to find the coordinates when gradient is zero, you equate the differentiated function to zero and solve.
thanks are you using the longman book
6. (Original post by bigmansouf)
thanks are you using the longman book
Yeah I am but for C3 and C4, it's a good book, has more questions to do once I finish the questions in the official textbook

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