反余弦

(函数来自 pyomo.contrib.fbbt.interval)

pyomo.contrib.fbbt.interval.acos(xl, xu, yl, yu, feasibility_tol)

y = acos(x); 将边界从x传播到y x = cos(y)

Parameters:

• xl (float)

• xu (float)

• yl (float)

• yu (float)

Returns:

• lb (float)

• ub (float)