A-Level Maths: I2-08 Locating Roots: The Newton-Raphson Method Example 2

[SS-tyhi]

My favourite way of revising a level maths is putting your videos on 2x speed as a nice recap of my lessons and then doing exam questions. Thanks so much for your very clear explanations of everything!!! :)

[neha]

I did a question similar from the ZigZag education sets on numerical methods and the question involved calculus with first order derivatives for the change of sign method. However, the markschme worked in degrees not radians so this was confusing. Is there any reason why you would think the marksheme wanted degrees? because I worked in radians just like how you stated in the video. Thanks for the amazing videos and explanations btw, they are great help !!!

[taegan]

So would the actual answer be " the limit as n approaches infinity = Pi? As the tangent is getting infinitesimally closer to intersecting at Pi, or will the tangent eventually actually intersect at Pi?

[jamminermit]

Will this method always converge to the closest value. For example, is the reason that we get pi as the answer rather than 0 or 2pi simply because our starting value is closest to pi?

[shlj]

Did anyone else start in degrees mode and kept pressing Ans key 30+ times until you realised you had degrees mode on 😂😂😂😅

[freddierobinson]

I am just doing a practise paper at the moment, and it says to proof that α is the only root, how would I go about this?