# f(x)={|x-4|} ,x not equal to 4}          x-4                              at x=4       {0       , x equal to 4}we have to find the left hand limit and right hand limit...i understood  how to find the right hand and left hand limit...but i cannot simply understand the meaning of this question.1)why is that 0(zero) written ?? and what is the whole use of-{0       , x equal to 4}  ??2) why is it written x equal to and not equal to 4... though we have to do the sum taking x=4 only???sir, i studied limits on my own and could even solve some of the examples of rd sharma..i have not taken any tuition... and looking forward not to take any..sir, please could you clarify these conceptual doubts of mine????

### Answered by  | 9th Apr, 2014, 09:32: AM

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