____ 3 - \/ 15 y + ---------- 2 -------------- / ____\ |5 - \/ 15 | |----------| \ 2 /
(y + (3 - sqrt(15))/2)/(((5 - sqrt(15))/2))
____ ____ \/ 15 y*\/ 15 y - ------ + -------- 5 5
y - sqrt(15)/5 + y*sqrt(15)/5
-sqrt(15)/5 - y*(-1 - sqrt(15)/5)
____ / ____\ \/ 15 | \/ 15 | - ------ - y*|-1 - ------| 5 \ 5 /
/ ____ \ -\3 - \/ 15 + 2*y/ -------------------- ____ -5 + \/ 15
-(3 - sqrt(15) + 2*y)/(-5 + sqrt(15))
____ 3 \/ 15 - + y - ------ 2 2 -------------- ____ 5 \/ 15 - - ------ 2 2
(3/2 + y - sqrt(15)/2)/(5/2 - sqrt(15)/2)
____ 3 \/ 15 - + y - ------ 2 2 -------------- ____ 5 \/ 15 - - ------ 2 2
(3/2 + y - sqrt(15)/2)/(5/2 - sqrt(15)/2)
____ 3 - \/ 15 + 2*y ---------------- / ____\ |5 \/ 15 | 2*|- - ------| \2 2 /
(3 - sqrt(15) + 2*y)/(2*(5/2 - sqrt(15)/2))
____ 3 \/ 15 - + y - ------ 2 2 -------------- ____ 5 \/ 15 - - ------ 2 2
(3/2 + y - sqrt(15)/2)/(5/2 - sqrt(15)/2)
____ ____ - \/ 15 + 5*y + y*\/ 15 ------------------------- 5
(-sqrt(15) + 5*y + y*sqrt(15))/5
-0.774596669241484 + 1.77459666924148*y
-0.774596669241484 + 1.77459666924148*y