1.y=1/(1+5x)^3 =(1+5x)^(-3)
y'= -3(1+5x)^(-4)*(1+5x)'
= -15(1+5x)^(-4)
= -15/(1+5x)^4
2.y=ln(lnx)
y'=(1/lnx)*(lnx)'
=1/(x(lnx))
1.y=1/(1+5x)^3 =(1+5x)^(-3)
y'= -3(1+5x)^(-4)*(1+5x)'
= -15(1+5x)^(-4)
= -15/(1+5x)^4
2.y=ln(lnx)
y'=(1/lnx)*(lnx)'
=1/(x(lnx))