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 one year ago
let f and g be differentiable functions such that
f(1)=2 f'(1)=3 f'(2)=4
g(1)=2 g'(1)=3 g'(2)=5
if h(x)=f(g(x)), then h'(1)=?
 one year ago
let f and g be differentiable functions such that f(1)=2 f'(1)=3 f'(2)=4 g(1)=2 g'(1)=3 g'(2)=5 if h(x)=f(g(x)), then h'(1)=?

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zepdrix
 one year ago
Best ResponseYou've already chosen the best response.0So you have to kind of remember the DEFINITION of the chain rule for this one.

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.0\[\large h(x)=f(g(x))\]The chain rule will produce this.\[\large h'(x)=f'(g(x))\cdot g'(x)\]

mlddmlnog
 one year ago
Best ResponseYou've already chosen the best response.0oh.. wait. i'll try to do it myself now. thank you for giving me a start! :)

mlddmlnog
 one year ago
Best ResponseYou've already chosen the best response.0here i the next one that's kind of similar to this. but i don't get. If \[f(x)=x ^{3}+3x ^{2}+4x+5\] and g(x)=5, then g(f(x))=?

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.0So here is how a composition of functions works. Everywhere you see an x, you replace it with f(x). Example:\[\large \color{orangered}{f(x)=2x}\]\[\large g(\color{cornflowerblue}{x})=\color{cornflowerblue}{x}+3\] \[\large g(\color{orangered}{f(x)})=\color{orangered}{f(x)}+3\]

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.0In the problem we've been given, the function \(g(x)\) is CONSTANT. There are no x's! So when we plug f(x) into it, it should give us the same answer, because g(x) is always 5. Always constant. You could do the composition thing I explained earlier and it might make sense. If you try to plug in f(x) for any x's in g, you'll see that you have nowhere to actually plug it in.

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.0Is your teacher any good? Because so far I'm really really disliking these problems. None of them are straight forward. It just feels like he gave you a list of puzzles to work on.

mlddmlnog
 one year ago
Best ResponseYou've already chosen the best response.0haha yes. she loves these types of questions. _____ all of her questions are like this. making our brains explode. it literally takes me like 8 hours to do hw. it's insane.
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