y=(1-x)(1-x^2)(1-x^3)^3求導(対数)ありがとう

y=(1-x)(1-x^2)(1-x^3)^3求導(対数)ありがとう

lny=ln(1-x)+2ln(1-x^2)+3ln(1-x^3)の両側に対数y′/y=-1/(1-x)+2/(1-x^2)*(-2x)+3/(1-x^3)*(-3x^2)=-1/(1-x)-4x/(1-x^2)-9x^2/(1-x^3)y′=-[1/(1-x)+4x^2)+9x^2/(1-x^3)]y=-[(1-x^2)(1-x^3)...