Find the (parametric) equation of the line \(L\):
(a) through the points \(P(1,3,2)\) and \(Q(2,5, -6)\);
(b) containing the point \(P(1,-2,4)\) and perpendicular to the plane \(H\) given by the equation \(3x + 5y +7z = 15\).
analytic-geometrylinear-algebralines-in-3dparametric-equationsdirection-vectornormal-vectorplanesvector-algebrafind-equation
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