Answer:
A
Step-by-step explanation:
Basically when we have x in the denominator, we don't want the denominator to be 0 as the value of f(x) will then be undefined. Therefore the answer is A.
Answer:
B
Step-by-step explanation
the answer is b, but check to make sure your question is in the correct category!
By the product rule,
By the power and chain rules,
When , the first and last term vanish, and we're left with