fill_in_multiple_blanks_question已验证
Question textConsider two lines (−1,1,−2)+s(2,1,−2)[math] and (1,2,−1)+t(0,1,−1)[math].a) A normal vector to both lines is (1,[math]Answer 1 Question 2[input], Answer 2 Question 2[input])[math].b) The...
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