Integration 22 • Trapezium Rule • P2 Ex11I • 🎲

Edexcel Pure Year 2

Thurs 9/1/20

[aworkingperson]

Beacuse of covid i have missed a few lessons it nice for someone who teaches like my maths teacher. please keep this and many of mates appricate these videos many thanks.

[animetheascension]

Hi Sir at 21:00 for part (c) I was just thinking how exactly would you divide up into four strips if you were to tackle the question as it would not work with for instance 0, π/12, π/6, π/3 as you need five values as it is four strips.
Thank you,

[shadowfatemahir]

The 2019 paper 2 question 2 about the trapezium rule question. Part a said to work out an estimate of the length. Trapezium rule is for estimating area under the curve. Y do we use the trapezium rule if we’re working out the length? Since trapezium rule is for area under the curve

[maygray]

Thank you so much. Just a quick question when explaining why it’s an overestimate, can we say the gradient is increasing or do we need to say the second derivative is greater than or equal to 0?
Thank you!!

[Jellyfishery]

Hello Mr bicen, question, in 18:52, why did you chose pi/6 for the x values to increase in?

[az.az]

hello sir, in the formula book, for the integration of seckx and also coseckx, what are the parts after the comma please.

[lg]

For part (a) in the last question, are you allowed to just put the integral into your calculator ( 1/cosx since there's no secx) and then just write down 1.317

[shadowfatemahir]

Also, u chose x and secx, x wld be the x values obv, would secx be the y values, I don’t understand why secx wld be the y values

[easondu]

in the last video sir you said about to integrate sin(2x)^3,
took me 10 min to get
cos(6x)/24 ---3(cos(2x))/8 is it correct?

[danielsundaram]

Do you think we could be asked to prove this?

[nayeemhoque]

how does secx become ln secx plus tanx

[danyaliqqbal]

Sir where did you get the values of x at 18:51