172 ON A MULTIPLE DEFINITE INTEGRAL. 



Another result of this same kind of analysis I shall indicate 

 without a demonstration, which there will be no difficulty in 

 supplying. 



fdx Jdy... e'^-W ' ' '/(max + riby+...) 



the limits being given by 



max + nby + ... > h and < h'. 



In conclusion, it may be well to remark, that the analysis 

 of which we have made use is not unfrequently applicable to 

 questions which tl*3ugh not difficult in principle are neverthe- 

 less somewhat perplexing in practice. 



