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if the function `f(x)` defined by f(x)=`(log(1+a x)-"log"(1-b x))/x` , if `x!=0` and k if x=0 is continuous at x=0 , find k.

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RD SHARMA ENGLISH-CONTINUITY-All Questions
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  6. Discuss the continuity of the f(x) at the indicated point: f(x)=...

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