Numerical Methods 1 • Proving there is a Root • P2 Ex10A • 🎲

Edexcel Pure Year 2

Mon 23/3/20

[danyaliqqbal]

Again massively impressed by the way pf teaching. The rate of students getting good at maths is increasing exponentially by your videos.

[mehekahmed]

Gonna watch this video with some popcorn

[rayislam]

Laptop bout to set on fire 😭 i feel your pain

[hxvoc_]

i thought my laptop was frying up i was so confused lol

[rayislam]

Btw sir to get a more continuous ink flow try increase/decrease the pen tip sensitivity

[ozone]

Thank you for the video! Can you please make a video on exam technique and where the marks are awarded because that is a part I slightly struggle on as I don't know the amount of working out I should do I.e. If the question is asking to differentiate sinxcosx I can easily do that in one step but it is three marks in the exam so I don't know whether I'll be awarded full marks, hopefully that makes sense.

[hafizx]

Hello Sir, for the question at 17:55, why is f(x) continuous? I thought that 1/x wasn't a continuous function.

[maymunaali]

i have this question i know a) but with b) how would i work it out

The equation In (x/3) - (x ^ 2)/4 + 2 = 0 has two solutions.

a) Show that one of the solutions equals 0.425 correct to three significant figures.

b) The other solution lies between positive integers and k+1 Find the value of k.

[engineeringmadeasy]

Hi Bicen,

there is an exam question:

Figure 3 shows that the price reaches a local minimum between 9 and 11 hours after trading begins.
(b) Using the Newton-Raphson procedure once and taking to =9.9 as a first approximation, find a second approximation of when the price reaches a local minimum.

I checked it's answer and it uses the the second derivative to get the right answer. Is the textbook and in your video, nowhere is mentioned that we need to use the second derivative. Can you please clarify this for me.

Thanks

[yourmum]

Hey Mr bicen, 20:00 shouldn't the standard form numbers be converted into decimal form for upto 3 dp or will we not lose marks in exams for that

[maymunaali]

How do i know when an equation is continuous and also when there is a vertical asymptote just by looking at it?

[jammydodger]

hey sir, there is no playlist for chapter 10 numerical methods- can you please make one??

[zain]

How did u know gx was continuous? 13:21