Derivatives: Logarithmic Differentiation

So i solved a few of the steps but i'm stuck at this one step and can't move on :(

Find yhttps://lewis.chem.sfu.ca/adm/jsMath.../85/char30.png if

y=(10x+9)^10x+1https://lewis.chem.sfu.ca/adm/jsMath...120/char3A.png

**Note:** The product of two numbers or two expressions should be entered as *a*b*. For the quotient of two numbers use *a/b*. For the power use *a^b*.

**1.** Take the natural logarithm of both sides:

lny = ln **(10*x+9)^(10*x+1) **

**2.** Simplify by using properties of logarithms:

**Important!** In your answer, lna must be entered as log(a).

lny = **(10*x+1)*log(10*x+9) **

**3.** Differentiate both sides with respect to *x*:

yhttps://lewis.chem.sfu.ca/adm/jsMath.../85/char30.pnghttps://lewis.chem.sfu.ca/adm/jsMath...120/char3D.pngy = (Help please)

**4.** Solve for yhttps://lewis.chem.sfu.ca/adm/jsMath.../85/char30.png:

yhttps://lewis.chem.sfu.ca/adm/jsMath.../85/char30.png = yhttps://lewis.chem.sfu.ca/adm/jsMath...120/char01.png( )

**5.** Substitute the original expression for y to get yhttps://lewis.chem.sfu.ca/adm/jsMath.../85/char30.png in terms of *x* only:

yhttps://lewis.chem.sfu.ca/adm/jsMath.../85/char30.png =

If someone could help me from 3 onwards i would really appreciate it.

Thanks :)