A) \[a-b\]
B) \[a+b\]
C) \[\log a+\log b\]
D) \[0\]
Correct Answer: B
Solution :
\[\underset{x\to 0}{\mathop{\lim }}\,f(x)=\underset{x\to 0}{\mathop{\lim }}\,\frac{\log (1+ax)-\log (1-bx)}{x}\] \[\underset{x\to 0}{\mathop{\lim }}\,\frac{\frac{a}{1+ax}+\frac{b}{1-bx}}{1}\] \[=a+b\]You need to login to perform this action.
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