True or false. Write T(true) or F(false) in each blank. ( ) | a | | b | le a b |

Question

True or false. Write T(true) or F(false) in each blank. ( ) | a | | b | le a b |, where a, b are vectors from Rn. ( ) two planes X1 + 2x2 - 3x3 = 1 and X1 + x2 + x3 = 1 are perpendicular. ( ) The curve with the vector equation r(t) = t2 i + i(t2 + 1) j + 5t2 - 1 )k is a line. ( ) a Times (a Times b) = (a Times a) Times b ( ) The line r(t) = (1 + t, 1 - t, 2 + 5t) is perpendicular to the plane x1 - x2 + 5x3 = 0. For any vectors a, b, c, it is true that a Times (b Times c) + c Times (a Times b) + b Times (c Times a) = 0. Multiple choice. Write the letter a, b, c, d, or e in each blank. ( ) The center and radius of the sphere x2 + y2 + z2 + 2x + 2y + 2z + 2 = 0 are center = (- 1, 1, 0), radius= 2 center = (1, 1, 1), radius= 2 center = (1, 1, 1), radius= 3 center = (1, 1, 1), radius= 1 none of these ( ) The curve c(t) = (t cos(t), t sin(t), t) lies on which of the following surfaces, a) a sphere b) an ellipsoid c) a plane d) a cone e) none of these (

Explanation / Answer

False False false False Truw True 2 A none of these 2 B none of these too many questions in one only ask differently

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