MCQOPTIONS
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MCQOPTIONS
| 1. |
The unit vector normal to the surface x2y + 2zx = 4 at the point (2, -2, 3) is- |
| A. | \(\rm \frac 1 3 \left( -\hat i + 2\hat j + 2\hat k \right)\) |
| B. | \(\rm -\frac 1 3 \left( \hat i + 2\hat j + 2\hat k \right)\) |
| C. | \(\rm \frac 1 3 \left( \hat i - 2\hat j + 2\hat k \right)\) |
| D. | \(\rm \frac 1 3 \left( 2\hat i + \hat j + \hat k \right)\) |
| Answer» B. \(\rm -\frac 1 3 \left( \hat i + 2\hat j + 2\hat k \right)\) | |