1000−10y−y²+y³ = 10³+y³ −10y−y² = (10+у)(10²-10у+у²)-у(10+у) =
= (10+у)((10²-10у+у²)-у) = (10+у)(100-10у+у²-у) = (10+у)(у²-11у+100)
1) y`=20x^4+6
2) y`=((6x^2-3x)`(2+4x)-(6x^2-3x)(2+4x)`)/(2+4x)^2=((12x-3)(4x+2)-4(6x^2-3x))/(2+4x)^2=(48x^2+24x-12x-6-24x^2+12x)/(2+4x)^2=(24x^2+24x-6)/(4x+2)^2
2)
∫(2-5x)dx=2x-2,5x^2
∫2,1=F(2)-F(1)=(2*2-2,5*2^2)-(2-2,5)=4-10+0,5=-5,5
∫(x^3+5x)/x*dx=(x^3)/3+5x+C
Bx-by-x-y-bx-ay=-by-ay-x-y