Supposing you know about the derivative, notice that

so that when
, the limit is equal to
and the answer is A.
For this case we have that by definition, a linear function is of the form

We have the following options:
A) 
Rewriting:

It's a quadratic function!
B) 
Rewriting:

It's a linear function!
C)
Rewriting:

It's a cubic function.
D) 
Rewriting:

It's a quadratic function!
E)
Rewriting:

It's a cubic function!
Answer:
The linear function is option B
2/21 is the answer
Hope this helps
Answer:
Respuestxplicación paso a paso: mcm (4-6-10)=en total es 60 dias