£14 DE INVENT. MEDIAR. PROPORT. 



indices a, 1?, y, <5^, s vnitati aequentur aequatio 

 quinti gradus fit ex fuperioribus : 



s'— 5 s*— 1 ( r- 1 js'— I o(r-- 1 )';s'— 5 (r— I )'5; K**— i)*— o 



5 S 5 S 



cuius radix erit zzzi ^'Vr-^-V r^V r-^Vr» 

 Seu pofito 2;rrj4-i erit huius aequaticnis 



j'— iof7'-|-ior(r+i)/+5r(rr4-r4-i)>'+r[r''i-r'4-f+i) 



5 5 5^5 



radix j —y r -4- y / -h y r' -f- y r*. 



DE 



