Lim ((n+1)⁴ -(n-1)⁴) / ((n+1)⁴ +(n-1)⁴) = Lim ((1+1/n)⁴ -(1-1/n)⁴) / ((1+1/n)⁴ +(1-1/n)⁴) = 0 /2 =0.ИЛИ Lim ((n+1)⁴ -(n-1)⁴) / ((n+1)⁴ +(n-1)⁴) =Lim( (n⁴ +4x³ +6x²+4x+1) - (n⁴ -4x³ +6x²-4x+1)) / (2n⁴ +12x²+2) =Lim( 4(x³ +x ) / (n⁴ +6x²+1) = Lim 4( 1/x +1/x ³) / (1 +6/ x²+1/x⁴) =0.