Section 2.—The Transformation of Multiple Integrals.

211. The general problem of transformation and its symbols ..

212. Another more general form of the same problem .. ..

213. Examples of the formulæ for transformation .. .. ...

214. Mode of assigning the new limits in the transformed in-

tegral .. .. .. .. .. .. .. .. .. ..

215. Examples of transformation of definite multiple integrals

216. Cases in which the limits of the transformed integral are

made constant by the transformation .. .. ..