differentiation

[viscid yacht]

part b pls

[celest quail]

you wouldn’t put the =0 on the 4th line?
You’d leave it till the last line where you show the big bracket simplifies to zero therefore the expression is 0

[tender sail]

4th line doesnt have =0

whcih one do you mean

[celest quail]

These two I circled shouldn’t be there?

Because with a show that question you shouldn’t make assumptions, no?
And putting =0 that early on is making an assumption that the expression is equal to zero before you even proved it

If I’m wrong mb

[tender sail]

im not really making an assumption

[celest quail]

Being a bit pedantic

[tender sail]

i get what your saying but ive not used the fact that its equal to 0 to change my working

im just showing that as the left side simplifies to 0 then the equation (...)=0 is true

[robust sphinx]

Where do you get this working out software from?

[tender sail]

Desmos

[robust sphinx]

Thanks