а) y = ( 0,5)^x × (2x - 1/3×x^6)
y'=(1/2)^xln1/2*(2x-x^6/3)+(1/2)^x*(2-2x^5)=(1/2)^x((x^6/3-2x)ln2+2(1-x^5))
б) у = 2 sinx × lnx
y'=2cosxlnx+2sinx/x
в) y = 3e^x / x^2 + 2
y'=(3e^x*x^2+3e^x*2x)/x^4=3e^x(x+2)/x^3
г) y = sinx / x-1 - ctgx - 0,3
y'=1/sin^2x+(cosx(x-1)-(x-1)sinx)/(x-1)^2