a Fig. 3. a ^2 = -794x«. … the pairs of equal roots y = -quintics Fig. 4.a y^ {.if — ^y i «) = 0 y=—- which the two 490 A Mathematical Theory of Magnetism. [xxxii. have when 5 = ^ = 1-375. A circle (fig. 4) described from theorioin as centre through these double points, and therefore
Electricity · Magnetism
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