Simple derivative and microeconomics questions check (1 Viewer)

[kuromusha]

Can you check if I got any questions wrong, please.

I am not sure about Q2, Q8 and Q9.

 

[kuromusha]

Fuck, I got 8/10 for this quiz.

Kudos for anyone who can tell me where I got wrong. Stupid Usyd won't let us review quiz.

 

[Nailgun]

Fuck, I got 8/10 for this quiz.

Kudos for anyone who can tell me where I got wrong. Stupid Usyd won't let us review quiz.

I think q8 is wrong
there are functions where the derivative is undefined at certain values of x, because it makes like a sharp corner kinda thing
I'll see if I can find an example

 

[si2136]

Not sure about 9 and 10, but 7 could be wrong?

 

[Squar3root]

Q9 is meant to be c

 

[Nailgun]

Not sure about 9 and 10, but 7 could be wrong?

nah 7 is right

 

[Nailgun]

also

derivative is undefined in both cases

 

[kuromusha]

Omg, before I submit the quiz, no one reply. After I submit the quiz, so many replies. Why you play with my emotion like that?

Sent from my SM-N9005 using Tapatalk

 

[InteGrand]

Simple example where a function isn't differentiable is f(x) = |x| at x = 0.

 

[kuromusha]

So Q8 is wrong. What is the other one?

 

[Nailgun]

So Q8 is wrong. What is the other one?

Q9 is meant to be c

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