m ----------------------------- / n \ / 2 \ |m + ----------|*\- n + m*n/ | 2 | \ - m + m*n/
m/((m + n/(-m^2 + m*n))*(-n^2 + m*n))
3 2 - m + n*m ---------------------------- / 2 \ / 3 2\ \- n + m*n/*\n - m + n*m /
2 m *(n - m) -------------------------- / 2 \ n*(m - n)*\n + m *(n - m)/
m --------------------------- / n \ / 2 \ |m + --------|*\- n + m*n/ | 2| \ m*n - m /