Differentiation Calculus HELP (1 Viewer)

[kehvin]

Hey guys,
I have these questions:
f(x ) = (2 'square root' x - 1/2 'square root' x) ^2
Answers says: 12x(x^2 - 1)

and

f(x ) = 3x^2 (x - 1/x)^2
Answers says: 4 - 1/4x^2

I'm not sure if the answers are correct because i did it and i came up with different answers. Please show working as much as possible. Thanks so much.

 

[AAEldar]

 

[SpiralFlex]

Hey guys,
I have these questions:
f(x ) = (2 'square root' x - 1/2 'square root' x) ^2
Answers says: 12x(x^2 - 1)

and

f(x ) = 3x^2 (x - 1/x)^2
Answers says: 4 - 1/4x^2

I'm not sure if the answers are correct because i did it and i came up with different answers. Please show working as much as possible. Thanks so much.

1. Confirmed question:










2.









So you mixed up the answers, but they are correct.

 

[SpiralFlex]

EDIT: Is this from Harry's Education? You mistyped question 1. Thank AAEldar, he typed it first.

 

[kehvin]

Thank you so much. LOL this is my friend's and yea, he goes to Harry's Education.

 

[SpiralFlex]

Thank you so much. LOL this is my friend's and yea, he goes to Harry's Education.

I edited the question you entered wrong. I think I would know "your friend", we might go to the same school.

 

[kehvin]

Do you go Burwood or Hurstville Harry?

 

[SpiralFlex]

Hurstville, I know you go to Burwood right?

 

[kehvin]

What school are you from? and hes a new student to Harry's Education.

 

[SpiralFlex]

Does your friend have the same name as your user?

 

[sombowdy]

heyy spiral. i go burwood harry's, im new
i dont think you would know me cos i go burwood ahhas

 

[SpiralFlex]

I know each and every one of these so called humans. I also know that you learnt general differentiation last week.