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wioBest ResponseYou've already chosen the best response.0
Do you know how to use the chain rule?
 one year ago

wioBest ResponseYou've already chosen the best response.0
Well your inner function is \(2x^23\) and your outer function is \(\cos(x)\). There shouldn't be anything hard about this.
 one year ago

zurfBest ResponseYou've already chosen the best response.0
do we have to use chain rule ? i'm confused on what we should do when with the cos
 one year ago

wioBest ResponseYou've already chosen the best response.0
The  is just \(1\cdot \cos(x)\). It's a constant. You can pull it out and put it back in after.
 one year ago

zurfBest ResponseYou've already chosen the best response.0
oh really? but this have to use f(x+h)f(x) first derivation ..
 one year ago

wioBest ResponseYou've already chosen the best response.0
You have to use this you mean? \[\Large \lim_{h\rightarrow 0}\frac{f(x+h)f(x)}{h}\]
 one year ago

wioBest ResponseYou've already chosen the best response.0
You're not allowed to use the chain rule?
 one year ago

zurfBest ResponseYou've already chosen the best response.0
Oh sorry, i just realised it only has to use chain rule. I make things go more complicated _
 one year ago

zurfBest ResponseYou've already chosen the best response.0
yeah the answer is sin(2x^23)(4x) right ?
 one year ago
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