1
y' =28x^6-15x^4+6
2
y'=42x^6-9x^2+5
y'(2)=42*2^6-9*2^2+5=42*64-9*36+5=2369
3
y(x)=4*x^-1 -2*x^1/5 - x
y'=-4*x^-2 - 2/5 * x^-4/5 - 1
4
y(x)=6*x^-3 - 3*x^2/5 - x^-1/2 +6x
y'=-18*x^-4 - 6/5*x^-3/5 +1/2*x^-3/2 +6 = -18/x^4 - 6/5*корень 5 степени из x³ + 1/2*√x³ +6
y'(1)=-18/1 - 6/5*1 + 1/2*1 +6=-18-6/5+1/2+6=-18-1.2+0.5+6=-19.2+6.5=-12,7
5
y'=21х^6 +20*x^-6 -12/5*x^-2/5 - 7