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# C4: Differentiation

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1. https://www.biochemtuition.com/wp-co...rentiation.pdf

Exercise 4C. Question 2. I don't really understand how to do it, would appreciate some help. Thanks
2. "the site cannot provide a secure connection"

could you scan the question *?*
3. (Original post by Paranoid_Glitch)
https://www.biochemtuition.com/wp-co...rentiation.pdf

Exercise 4C. Question 2. I don't really understand how to do it, would appreciate some help. Thanks
Differentiate it, find the gradient at x=2, then construct the tangent line by using

Also turn that mixed fraction into an improper one, for the sake of simplicity.
4. Remember that if you have a function then is, by definition, the gradient of the tangent line to drawn at .
5. (Original post by RDKGames)
Differentiate it, find the gradient at x=2, then construct the tangent line by using

Also turn that mixed fraction into an improper one, for the sake of simplicity.
Thanks. Though how do i differentiate it. I ended up with y * (in 2 -in 2) which is definitely wrong.
6. (Original post by Paranoid_Glitch)
Thanks. Though how do i differentiate it though. I ended up with y * (in 2 -in 2) which is definitely wrong.
If then so

not sure where you're getting that you're getting frmo.
7. (Original post by Paranoid_Glitch)
Thanks. Though how do i differentiate it though. I ended up with y * (in 2 -in 2) which is definitely wrong.
You can use substitution .

Do you know how to differentiate u with respect to x?
8. (Original post by RDKGames)
You can use substitution .

Do you know how to differentiate u with respect to x?
Yeah it worked. Thanks. (With chain rule, right?)
9. (Original post by Paranoid_Glitch)
Yeah it worked. Thanks. (With chain rule, right?)
Chain rule is the overall method, yeah, but differentiation of u wrt x would require implicit differentiation.

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