Y=((x-3)^2)/(x-2)^3
[b](u/v)`=(u`*v-u*v`)/v^2[/b]
=(((x-3)^2)`*(x-2)^3-(x-3)^2*((x-2)^3)`) / (x-2)^6=
=(2(x-3)*(x-2)^3-(x-3)^2*3(x-2)^2)/(x-2)^6=
=(2x-4-3x+9)*(x-3)/(x-2)^4=
=(5-x)(х-3)/(x-2)^4=
=(8x-x^2-15)/(x-2)^4
y``=(y`)`=((8x-x^2-15)/(x-2)^4)
[b](u/v)`=(u`*v-u*v`)/v^2[/b]
=((8x-x^2-15)`*(x-2)^4-(8x-x^2-15)*((x-2)^4)`)/(x-2)^8 =
=((8-2x)*(x-2)^4-(8x-x^2-15)*4*(x-2)^3))/(x-2)^8=
=((8-2x)*(x-2)-4*(8x-x^2-15))/(x-2)^5=
=(8x-2x^2-16+4x-32x+4x^2+60)/(x-2)^5=
=(2x^2-20x+44)/(x-2)^5