oh ! so is my answer incorrect ?
For that last example, you overlooked squaring the entire denominator.
What I meant earlier is that you are comfortable with the situation
where the "function nesting" is one level deep, when applying the chain rule.
is one level beyond
q=6x
However...
has an extra stage.
Beginning with x, we have
but then we take the square root of this
so the "nesting" is 2 levels deep, whereas it was only 1 level deep for
Hence
How is that ?
Ok I will do squaring and see if I can simplify in any way. However I take it rest of is ok. Is that correct? Also I know why I made mistake in "v" because I wasn't careful but since you pointed it out I think I will be extra carful in writing my steps out. Just away from the computer for next hour so when get back will send you my correction. I must say you have given me that confidence I thought I'll never have . Sincere thank you