Question

A unit normal to x²+y²+z²=5 at ( 0,1,2) is equal to

Answer 1

Answer:

${x }^{2} + {y}^{2} + {z}^{2} = 5 \\ {0}^{2} + {1}^{2} + {2}^{2} = 5 \\ 0 + 1 + 4 = 5 \\ 5 = 5$