В числителе скорей всего +1. Тогда
9x²-6x+1=(3x-1)²
6x²+x-1=0
D=1+24=25
(8/ x + x^2) *√ x = 8√x / x + x^2 * √x= 8x^(-1/2) + x^(5/2);
y'= (8x^(-1/2) + x^(5/2))'=8*(-1/2) * x^(-1/2 -1) + 5/2 * x^(5/2 -1) =
=- 4 x^(-3/2) + 5/2 * x^(3/2)= 4 / √x^3 + 5*√x^3 / 2
F(x)=2x^5/5+с
F(1)= -2
2*1/5 +C=-2
C= -2 -2/5
C= -2 2/5
F(x)= 2x^5/5 - 2 2/5
А) (9.81-9.8)/9.81≈0.001=0.1%
б) (3.141592-3.142)/3.141592≈ 0.0001=0.01%
в) (6.02-6.01)/6.02≈0.002=0.2%