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9 3 Cont Orthogonal trajectories 30 Find orthogonal trajectories to the family of curves given by y K X orthogonal means perpendicular tangent lines f Ly hay 34 2 negative reciprocal slopes dis F Z k E y K can represent any real number so we need to replace it if 6 3 K 4 So days Z Ep days 32ft def 25g 3 y dy 2x dx Zz y X't C
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