154 DE CRITERIIS INTEGRABIL. 



4-7r'^'-fK'W etc. 4-7ry+KV'' etc. 



+K"r" 4-k'V''^. 



Si igitur vlterius ponatur dazzydx-\-^dy , inuenietur 



+ »-"'(^) +TtV"+K'f" 



+/>(^i)+P?'(r^)+/>?'(l^) etc. +K''y'" 



+;'?"('7r) «tc. 



+?(!-p+?/''(^3 



+ »■ e^) 



+ rr^) 



Quae aequatio fub hac quoque forma repraefentari 

 poteft : 



v=(^^)+pf^')+?(fp+»-(|-;) 



' +P'0 + l'i'iJ^^<i) +v?' + 7rr'+K'^' 



+^'(j^)+r''(^Jl') etc. +7i'/-"+H'/"+etc. 



+p/.'>^^'i+f"(i^) 

 + ^"'(l^-> 



