not the product rule ... the chain rule
now clean up the algebra
2. Find the derivative of
I used the product rule and this is my working, however I don't end up with the correct answer, can someone please tell me where I am going wrong, thanks.
so now I multiply both together to get the derivative of
Now using the product rule and putting this together.
the correct answer is.
Oh I see.
But I am just wondering how did you know to use the chain rule instead of the product rule? As this expression is a product of two functions, so that's why I assumed I should use the product rule.
and I thought the chain rules was supposed to be used for a function of a function. Like
So for an expression like this
would you use the chain rule or product rule?
thank you for clarifying, greatly appreciated.