MathematicsEasy179×since 2002Q4227limy→01+1+y4−2y4\mathop {\lim }\limits_{y \to 0} {{\sqrt {1 + \sqrt {1 + {y^4}} } - \sqrt 2 } \over {{y^4}}}y→0limy41+1+y4−2Aexists and equals 122{1 \over {2\sqrt 2 }}221Bexists and equals 142{1 \over {4\sqrt 2 }}421Cexists and equals 122(1+2){1 \over {2\sqrt 2 (1 + \sqrt {2)} }}22(1+2)1Ddoes not existsCheck answerSkip