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[latexpage] $u=u_1,u_2,u_3$ $v=v_1,v_2,v_3$ $u \times v = u_2v_3-u_3v_2, u_3v_1-u_1v_3, u_1v_2-u_2v_1$   Salam sejahtera untukmu, karena kesabaranmu, dan sebaik-baiknya tempat (surgalah balasannya)

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