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On the condition that the straight line lx+my+nz=0 should be a normal to the conic (a, b, c, f, g, h)(x, y, z)2=0 the co-ordinates being trilinear

Published online by Cambridge University Press:  20 January 2009

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The condition in question may be found by using the following theorem:-

If the equation in trilinear co-ordinates

Type
Research Article
Copyright
Copyright © Edinburgh Mathematical Society 1890