Cambridge Prelim MX1 Textbook Marathon/Q&A (14 Viewers)

[davidgoes4wce]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

How do you differentiate this?
View attachment 32887View attachment 32887

Someone will have to double check again as I don't have my book with me.

 

[Shuuya]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

Someone will have to double check again as I don't have my book with me.

Looks correct

 

[drsabz101]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

That's the right answer thankyou again

 

[davidgoes4wce]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

That's the right answer thankyou again

No worries

 

[drsabz101]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

Okay i also need help differentiating these two equations:

 

[InteGrand]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

Okay i also need help differentiating these two equations: View attachment 32888

Split up each fraction and use index laws to make each term a power of x. Then differentiate using the power rule.

 

[Shuuya]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

Okay i also need help differentiating these two equations: View attachment 32888

Have you learnt quotient rule yet?

 

[drsabz101]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

no not yet, only the chain rule

 

[InteGrand]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

Have you learnt quotient rule yet?

Those ones are easier done without the quotient rule.

 

[davidgoes4wce]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

Okay i also need help differentiating these two equations: View attachment 32888

 

[Shuuya]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

Those ones are easier done without the quotient rule.

Yeah haha, I usually just blindly dive into quotient rule and hope for the best

 

[InteGrand]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

Yeah haha, I usually just blindly dive into quotient rule and hope for the best

Haha. Quotient rule is something nice to avoid if possible as it is a bit tedious.

 

[drsabz101]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

Thankyou, I did the questions again and looked back at your solution ,and I am getting them right

 

[drsabz101]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

I differentiated the equation in part a then sub in 1 for x , so y'= 2a-2ax , then when you sub in 1, you get y=2a-2a

Can someone tell me where I went wrong, because the answ2r is 2a-a^2

 

[davidgoes4wce]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

I differentiated the equation in part a then sub in 1 for x , so y'View attachment 32889= 2a-2ax , then when you sub in 1, you get y=2a-2a

Can someone tell me where I went wrong, because the answ2r is 2a-a^2

Should the answer be a^2-2a?

 

[InteGrand]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

I differentiated the equation in part a then sub in 1 for x , so y'View attachment 32889= 2a-2ax , then when you sub in 1, you get y=2a-2a

Can someone tell me where I went wrong, because the answ2r is 2a-a^2

 

[davidgoes4wce]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

I got the same answer as InteGrand, here is my step by step solution:

 

[drsabz101]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

Thnx. I have been stuck on differentiating this

 

[InteGrand]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

Thnx. I have been stuck on differentiating thisView attachment 32890

 

[Shuuya]

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread

Thnx. I have been stuck on differentiating thisView attachment 32890

Remember that a is a constant