=7x^6-10x^4+(24/x^-4)+(5/6)*(6/5)x^(1/5).
y`=5^x*ln5-(7/cos^2x)+3*(-1/sin^2x)+(1/(1+x^2))=
=5^x*ln5-(7/cos^2x)-(3/sin^2x)+(1/(1+x^2)).
y`=(x^2)`*sinx+x^2*(sinx)`+2*cosx+2*(cosx)`-2*(sinx)`=
=2x*sinx+x^2*cosx+2*cosx+2*(-sinx)-2*(cosx)=
=2x*sinx+x^2*cosx-2sinx.
y`=((xlnx)`(1+x)-(1+x)`*xlnx)/(1+x)^2=
=((lnx+1)*(1+x)-xlnx)/(1+x)^2=
=(lnx+1+x)/(1+x)^2