Bullet trains, renowned for their speed and reliability, operate at over 300 km/h, making them the fastest form of rail ...

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The device includes a rigid base which supports the user’’s foot, straps that spread the user’’s toes, and inserts and ...

Vectors in 3D, definitions and notation, operations on vectors, scalar and vector products, triple products, 2x2 and 3x3 determinants, applications to geometry, equations of a plane and straight line.