Y mul div c c mul pow x4 div c c mul pow x2 c mul pow add x3 add sqrt x4 tan x2 c mul add c pow tan mul c mul pow x4 c mul pow x2 c pow add x3 add sqrt x4 tan x2 c c mul add x3 x2 add pow x4 c mul c mul pow x4 div c c add x3 add sqrt x4 tan x2