question_answer 47)

(x3 + x2 + x + 1)  y =1 when x = 0.  

Answer:

 Given (x3 + x2 + x + 1)             Integrating both sides w.r.t. we get,            ?? (1)       Let             Put x = ?1, 2A = 1       Put x = 0,       A + C = 0       On equating coeff. Of x2, we get       A + B = 2                   Put in (1)                                                 Put x = 0, y = 1