JEE Main 20178 Apr, Morning shiftMathematicsHardLimit, Continuity and Differentiability420× since 2002If y = [x+x2−1]15+[x−x2−1]15,{\left[ {x + \sqrt {{x^2} - 1} } \right]^{15}} + {\left[ {x - \sqrt {{x^2} - 1} } \right]^{15}},[x+x2−1]15+[x−x2−1]15, then (x² −-− 1) d2ydx2+xdydx{{{d^2}y} \over {d{x^2}}} + x{{dy} \over {dx}}dx2d2y+xdxdy is equal to :AOption A. 125 yBOption B. 124 y²COption C. 225 y²DOption D. 225 yCheckSkip · show solution
