- Question:
- Given
*α*= 3*x*d*x*+ 4*x*^{2}*y*d*y*, evaluate*α*at (*x*,*y*) = (2, 6) along ⟨d*x*, d*y*⟩ = ⟨0.003, 0.005⟩. - Answer:
- 0.498.

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