2 unit maths revision (2 Viewers)

[Bored Of Fail]

noticed the other thread was deleted

ill start


let f(x)=1+x

find f(1)

 

[SpiralFlex]

3! Just kidding, 2. ;-)

Differentiate,

 

[MrBrightside]

3! Just kidding, 2. ;-)

Differentiate,

=

 

[ohexploitable]

=

ಠ_ಠ

 

[MrBrightside]

View attachment 22697

 

[SpiralFlex]

=

Are you sure? ;-)

 

[MrBrightside]

Are you sure? ;-)

well I used the quotient rule

 

[SpiralFlex]

I made the question up on the spot, I didn't get your answer.

I got

 

[funnytomato]

well I used the quotient rule

should've used the product rule !

 

[ohexploitable]

well I used the quotient rule

That's a waste of time,

 

[ohexploitable]

should've used the product rule !

What?

 

[slyhunter]

Yeah, don't over think the question.

 

[MrBrightside]

eh sorry accidentally equated v' as 0, it should of been NOTHING.

(x+2)^2 / x^2 is right

 

[Bored Of Fail]

New Question:

Simplify: x^2 / (3x)

 

[Bored Of Fail]

=

lol at this rate you wont even be able to get full marks on Q1. Cant even do an easy differentiation question, and that is Q3 difficultly

 

[cutemouse]

New Question:

Simplify: x^2 / (3x)

x =/= 0

 

[hscishard]

eh sorry accidentally equated v' as 0, it should of been NOTHING.

(x+2)^2 / x^2 is right

never assume everyone is correct
it's best to try again

 

[Bored Of Fail]

never assume everyone is correct
it's best to try again

cept me of course, im always right XD

 

[Bored Of Fail]

I made the question up on the spot, I didn't get your answer.

I got

theres the mistake,(x+2)( 2x -(x+2) ) / (x^2)

you didnt distribute the negative to both terms of the bracket

should be (x+2)(x-2) /x^2

= ( x^2 -4) / x^2 = 1 -4/x^2 which is what ohexploitable got, which did the much better way

 

[ohexploitable]

Are you sure? ;-)

Are you sure? ;-)