# Chain Rule Help

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#1
Hello everyone,

I have no idea how to start solving these questions I’ve been set. Could someone please explain to me what to do to arrive at an answer? I have shared the link to the picture of the questions(from Question 19)

http://imgur.com/ZRKHXVq

Thank you!
0
2 years ago
#2
f'(2) means dy/dx when x is 2

if y = g(x) + 8x -1 for instance,

then dy/dx = g'(x) + 8
0
#3
(Original post by the bear)
f'(2) means dy/dx when x is 2

if y = g(x) + 8x -1 for instance,

then dy/dx = g'(x) + 8
Thank you - I think I’m still a bit confused 😅 sorry
0
2 years ago
#4
You need to revise the chain rule:

So, for example, if then
Last edited by SerBronn; 2 years ago
0
2 years ago
#5
(Original post by SerBronn)
You need to revise the chain rule:

So, for example, if then
that is a very confusing way to "help" someone who is struggling with the chain rule.
1
2 years ago
#6
(Original post by the bear)
that is a very confusing way to "help" someone who is struggling with the chain rule.
Giving him the formula to use and a worked example is 'very confusing'?
0
2 years ago
#7
(Original post by SerBronn)
Giving him the formula to use and a worked example is 'very confusing'?
the formula is not easy to understand for someone who is having difficulties.
0
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