What is \(\rm \displaystyle\lim_{x \rightarrow 0} \dfrac{3^x + 3^{-x}-2}{x}\) equal to ?

What is \(\rm \displaystyle\lim_{x \rightarrow 0} \dfrac{3^x + 3^{-x}

1.	What is \(\rm \displaystyle\lim_{x \rightarrow 0} \dfrac{3^x + 3^{-x}-2}{x}\) equal to ?
A.	0
B.	-1
C.	1
D.	Limit does not exist
Answer» B. -1