7. Give your idea of the meaning of the Helena, and especially of the characters of Phorcyas, Lynceus, and Euphorion. 8. Translate (a) Wer gegenwarts der Frau die Dienerinnen schilt, Der Gebiet'rin Hausrecht tastet er vermessenan; Geleistet als die hohe Kraft von Ilios Umlagert stand und fiel und lag; nicht weniger (b) Entferne schnell die kühn erworbne Last, Voreilend ihren Tritten lasz beblümt An Teppich Teppiche sich wälzen; ihrem Tritt Nur Göttliche nicht blendend, höchster Glanz. (c) Nicht allein! wo du auch weilest, Wüszten wir doch kaum zu klagen, Scharfer Blick die Welt zu schauen, PURE MATHEMATICS.-PART I. FIRST PAPER. The Board of Examiners. 1. Define a reciprocal equation, and shew that all reciprocal equations may be reduced to one standard form. 2. Find the necessary and sufficient conditions that an equation may have equal roots, Shew that the equation x2 + nx¬¬1 + n(n − 1)x12 + ... + 2 = 0. cannot have equal roots. 3. If u be the nth term in an infinite series in which every term is positive, shew that if the limit when n is infinite of un+1/un be less than unity the series is convergent, and if this limit be greater than unity the series is divergent. Determine whether the series 4. Enunciate and prove the exponential theorem. Prove that n+ 1+ (n + 1)(n+2)+ (n+1)(n+2)(n+3) + (2)2 1+ +.. (11)2 (8)2 5. Shew how to find the general term of a given recurring series. If a series has for its th term the sum of r terms of a recurring series, it will be itself a recurring series with one more term in the scale of relation. 6. Shew that the probability that two independent courts, should both happen, is the product of the separate probabilities of their happening. A bag contains a certain number of balls, some of which are white. I am to get a shilling for every ball so long as I continue to draw white only, the balls drawn not being replaced. But an additional ball, not white, having been introduced, I claim as compensation to be allowed to replace every white ball I draw. Shew that this is fair. 7. If the elements of a determinant be rational integral functions of x, and if when xa the elements of p columns become proportional the determinant is divisible by (aa)-1. sin no sin 0 = (2 cos 0)-1-(n-2), (2 cos 0)”—3 + .... +(−1)" (n − r -1), (2 cos 0)"-2-1 + .... 9. Define sin z, cos z where z=x+y√—1, and prove that sin (0 + 4) = sin 0 cos cos (0 + 4) = cos 0 cos where 0, are complex. If a, ẞ be real, reduce + cos ℗ sin 4, — sin 0 sin 4, tan (a +ẞ√1) to the form A+B√—1. 10. Having given the value of Co + C1x + Cqx2 + .... where Co, C1, ... c, are independent of x, find the values of |