MCQOPTIONS
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| 1. |
If \[f(x)={{x}^{3}}\sgn x,\]then |
| A. | f is derivable at x=0 |
| B. | f is continuous but not derivable at x=0 |
| C. | LHD at x=0 is 1 |
| D. | RHD at x=0 is 1 |
| Answer» B. f is continuous but not derivable at x=0 | |