AQA Core 4 6.02 Introducing Implicit Differentiation

[eddiefitzpatrick]

its the night before the exam at half 12 and this has really helped, thanks dude

[Craziestbanana]

In 4 mins you explained something so clearly and precisely that my teacher failed to teach me in 3 lessons, thank you.

[samiulhussain]

watching your whole C4 playlist at speed of ×2 a day before my exam ;)

[zaainnn]

You could also use the chain rule on y^3

[Legenddeadmanever]

Actually no worries Jack. Im guessing you differentiated it into 1 but then you must stick a "dy/dx" after it so 1(dy/dx)=dy/dx. Correct me if im wrong.

[Legenddeadmanever]

Why do you differentiate "y" into "dy/dx" insted of into "1"? And plus why were you differentiating y^3 using the product rule when you could simply bring the power down and minus one from the power?

[Paul-obhy]

Hey I’m from Scotland and I was wondering if this would be the first or second year of a level

[huthaifaahmed]

Hi Jack,
How come when you differentiated ysin(x), you didn't times the whole ycos(x) + sin(x) by dy/dx and only the sin(x) part?

[israrahmed]

Wouldn't the numerator of the final answer be - 3x^2 - ycosx instead of the (+) ?