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| Q. |
In optimisation, with the first order derivative equal to ___ and the second order derivative ___ the function is at a maximum. |
| A. | 0, 0 |
| B. | 0, < 0 |
| C. | 0, > 0 |
| D. | > 0, 0 |
| Answer» B. 0, < 0 | |
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