how to use rugarch in r what is the shape value for rugarch rugarch sstdexkurt function what does rugarch forecast return rugarch sstdexkurt what does rugarch expect in r what is rugarch what is sstdexkurt in rugarch what is rugarch what shapes does rugarch forecast use what is the r function for rugarch how many shape estimates can rugarch forecast rugarch sstdexkurt how to forecast shape in rugarch rugarch function is used where sstd a prediction function of rugarch returns the skew-student distribution of _____. what r function returns illegal shape estimates rugarch forecast function what r function is expected to return ip shape what is the name of the forecast function in rugarch