a + a*b + b2/b + a2^(-0.5)*(a*b)^0.5
2 ____ _____ a2*b2 + a*a2*b + a*a2*b + b*\/ a2 *\/ a*b ------------------------------------------- a2*b
/ _____ ____ ____ _____ ____\ ____ ____ _____ b*\\/ a*b + a*\/ a2 - \/ a2 *\/ a*b + a*b*\/ a2 / + b2*\/ a2 + b*\/ a2 *\/ a*b ----------------------------------------------------------------------------------- ____ \/ a2 *b
_____ ____ b*\/ a*b + b2*\/ a2 a + a*b + --------------------- ____ \/ a2 *b
_____ ____ ____ ____ 2 b*\/ a*b + b2*\/ a2 + a*b*\/ a2 + a*\/ a2 *b ------------------------------------------------ ____ \/ a2 *b