I faced my igcse maths paper and the series of questions really helped out ty sir for all the support

i have a question regarding question 4. Why i=did we substitute t in the velocity equation and not the speed equation?

@AdmireR6S

27 күн бұрын

s = distance / displacement, not speed. it goes s = distance, v = velocity, a = acceleration. I understand how you may be misunderstood into thinking s = speed, but S is distance/displacement

great video, but why do u raise the final answer to a negative power for example 36ms-2?

@MrAstburyMaths

Ай бұрын

That’s the units. I’m not raising the answer to the power. Velocity is ms^-1 Acceleration is ms^-2 But don’t worry about that, you won’t be accessed on units.

@manishff5116

Ай бұрын

m/s^2 is the unit for acceleration as 1/s^2 can be written as s^-2 36m/s^2 is written ad 36ms^-2

i was wondering on question 4 of the video, you have to find the minimum speed of p, would you do the same process to find a maximum speed of something.

@manishff5116

Ай бұрын

Yes, cuz while we differentiate and set it to 0 that is where the turning points are there, and we can find the maximum or minimum point at the turning points. And there might be a confusion whether u are getting minimum point or maximum point. if a quadratic equation is differentiated and the turning point is found... the co efficient of x^2 term is looked at, if it is positive then the turning point is minimum if negative then it is maximum point. If 0 it is linear graph 😂(sorry if my random joke bothered you). If a cubic equation is differentiated then then 2 values would be obtained so the bigger value is maximum and the smaller one is minimum. No need to rely on the co efficient of x^3

@lxterzlxterz2713

Ай бұрын

@manishff5116 thank you 👍

for question 19 at 7:40 do i still get the marks if you use the quadratic formula instead of factorising the way you do it? i still got the same answer

@MrAstburyMaths

28 күн бұрын

As long as you show your working it’s fine. Make sure you write out the quad formula and show you’ve substituted the numbers in correct

hello is it possible u make a video of u solving may june 2024 1h ?? i have the pdf and everything i can send it to u

@MrAstburyMaths

Ай бұрын

I can make a video but won’t be able to upload it until July 2025 I’m afraid! The papers are locked for just over an year

@Dark-qm6ex

Ай бұрын

@@MrAstburyMaths alr thx

@aintnoway78

Ай бұрын

how do you have the pdf?

@Dark-qm6ex

Ай бұрын

@@aintnoway78 before i got the pdf i already had pictures of the exam due to its leakage by a guy after the exam was done. later on i got the pdf i cant mention how i got it and who gave it to me cuz he might get into trouble

@waleedomari8042

27 күн бұрын

@@Dark-qm6exyou had the pdf before the exam?

I thought it did come like the stationary point question?