This man's tone of voice describes my enthusiasm for maths exactly.

@Ripler

Жыл бұрын

lmfao

@jiayaoweng1920

11 ай бұрын

literally bro

*Timestamps:* 0:14 - Trigonometry 3:41 - Vectors 5:00 - Differentiation 12:28 - Integration 17:40 - Exponentials & Logarithms Would have been amazing if you could've gone over sequences and series as well but thanks so much for these - really helpful.

@tonydebling

2 жыл бұрын

Check out the Formula Booklet videos

@leohjoon4409

2 жыл бұрын

again with the clutch. thanks buddy

@soupdragon12

2 жыл бұрын

@@tonydebling howcomes -300pi/r^2 differentiated to 600/r^2 and not 600pi/r^3???

@soupdragon12

2 жыл бұрын

@@tonydebling *600pi/r^2***

@abrid3645

2 жыл бұрын

Iii

@22:41 second derivative of C should have final term 600pi/r^3 not 600pi/r^2, but reasoning remains the same [thank you SoupDragon]

Great video sir keep up your fantastic work. I make similar videos.

thank you very very much

great help cheers

Thank u so much!! Good luck everyone for the paper🤝

@pip2162

2 жыл бұрын

You doing WJEC?

@npdap

Жыл бұрын

@@pip2162 im doing edexcel mate

@pip2162

Жыл бұрын

@@npdap Ahh okay, you posted your comment the day before the wjec paper so I thought you mightve been doing that one too. Turns out the wjec ended up putting questions on the exam about topics they took out of the specification 🥲

thank you so much :)

Hey there. Would there not be a 'c' variable when you integrate the equation within the brackets at 17:10?

@tonydebling

5 ай бұрын

In a definite integral (one between limits) there is no need for a +c (constant of integration). If you did put one in it would get cancelled out when you substitute the limits.

In the first question where did the 2 come from. I understand the previous step of substituting 1-sin(squared)x into cos(squared)x but can't see where the 2 is.

@yeetyuta9376

Жыл бұрын

i have the same question. though i have to say, I suck at factorising so I always use the calculator. so when you factorise and you get the x values and you kinda work your way backwards (as in from the x values you try to get to the brackets) you will get the two. but I am still confused how it happened. i am really bad at explaining I hope this helped :D

@EvenTheTop

Жыл бұрын

I think ive gone through my working three times now and still can't figure it out. Trig identities is one of yhe things I'm really struggling with as well. My exam is tomorrow 😫 im so screwed

@yoepicboi

Жыл бұрын

If you work backwards (3sinx-1)^2 = 2 can be written as 9sin^2 x - 6^sinx + 1 = 2 which it you take away 1 from both sides gives you the other equation

@veisnthere9

11 ай бұрын

yeah me too!

can you make a similar video but on A2 stuff pls?

Hey, so I was wondering if you could give a detailed explanation on the screen of how you get to each part with methods and what you did, but your explation was amazing thank you.

@tonydebling

2 жыл бұрын

I do do online tutorials. I charge £30 for 40mins. Let me know if you are interested. Email tonydebling@gmail.com

@albinalex6435

2 жыл бұрын

@@tonydebling if you can do an hour for £30 I will be interested

@tonydebling

2 жыл бұрын

@@albinalex6435 Sorry don't negotiate on these rates.

@albinalex6435

2 жыл бұрын

@@tonydebling no worries, it's just I already have maths tutor and they do 1 hour for £35

@bfzee9813

Жыл бұрын

@@albinalex6435 bros really negotiating with the maths teacher

for the first question where did the equals 2 come from?

@usmaanafzal3743

3 жыл бұрын

you get 1-sin²x = 8sin²x - 6sinx then 1 = 9sin²x - 6sinx then add 1 to both sides 2 = 9sin²x - 6sinx + 1 if you expand (3sinx - 1)² = 2 you will get 9sin²x - 6sinx + 1 = 2

@cobraaz2551

3 жыл бұрын

@@usmaanafzal3743 why would you add 1 to both sides?

@usmaanafzal3743

3 жыл бұрын

@@cobraaz2551 it is irregular as usually you wouldn’t have to add 1 to both sides of an equation but in this question, to prove they are equal you have to add 1 to both sides

@edded2487

2 жыл бұрын

@@usmaanafzal3743 this doesn't make much sense to me :/ would never think to add 1 to both sides in an exam

@edded2487

2 жыл бұрын

as it should be -1 on both sides

for 12:00 shouldn't you do the negative reciprocal for the gradient? so it should be -2/7

@tonydebling

Жыл бұрын

You've been asked to find the equation of the tangent so you just use the value of dy/dx. You would use the negative reciprocal if you wanted to find the equation of the normal.

@1My3My9

Жыл бұрын

@@tonydebling oh so if only it says ''normal'' you do the negative reciprocal but when its tangent you use the normal gradient. the reason why I thought you did it was because tangents are perpendicular to the circle and my teacher said do the negative reciprocal

@tonydebling

Жыл бұрын

@@1My3My9 Tangents aren't perpendicular (at right angles) to circles they touch the circumference (tangere is to touch)

@1My3My9

Жыл бұрын

@@tonydebling oh thanks

how did you get 352 for the trig identities?

@tonydebling

Жыл бұрын

Arcsin(0.1381)=7.94, sin is negative in the 3rd and 4th quadrants, so to solve sin x = -0.1381 we have x= 180 + 7.94=187.94 and x = 360 - 7.94 = 352.06

Your vids are very helpful however i don’t get how you got the two in the first question

@tonydebling

8 ай бұрын

Add 1 + Sin(^2)x to both sides

@lol.1296

8 ай бұрын

Why do we have to add 1?

Hello to everyone watching this the night before exams ✌️

Can i use this for ocr???

@tonydebling

2 жыл бұрын

Yep, It's fine for OCR.

Got my maths AS exam tomorrow and still cant figure out how you got p=7.5 on that first log+exponential question 🤦

@poscii754

Жыл бұрын

nevermind! figured it out! e^0 would equal 1 so 1p=7.5: p=7.5 this video is incredibly helpful ❤

@vixtasy

Жыл бұрын

@@poscii754 Man hope the exam went well, I have my year 12 mocks next week so practicing AS too.

Can you make one of these for A2 please

@tonydebling

Жыл бұрын

I've done A2 Mechanics and A2 Statistics

@yz7980

Жыл бұрын

@@tonydebling are you planning to make any videos for pure?

Which as level maths is easy Cambridge or edexcel?

@tonydebling

3 жыл бұрын

Hey, I can't really say. These days the A level syllabuses are much more closely aligned so there shouldn't be much difference in difficulty. I think the availability of resources and the level of service provided by the exam boards are more significant, but on these matters I cannot comment.

Where is the sketching graph and binomial expansion

@nikhilramchurnn7946

2 жыл бұрын

In the video before this one

@almaazsalie2859

2 жыл бұрын

Hi! not sure if this is a little late but its over here - kzread.info/dash/bejne/jK17zrqmotKuqdI.html

15:47

Is this also with cambridge

@shehrankazi4891

2 жыл бұрын

Cambridge usually prefers writing an equation for ex. y = 2x+3 instead of y = f(x) most of the times.

At 5:42 why is -7/3x^-1/2, shouldn’t it be just to the power of 1/2, not -1/2 as -7^1/2*1/3x^-1/2=-7/3x^1/2

@tonydebling

2 жыл бұрын

It's the brackets ... (-7/3)x^(-1/2) = -7/(3x^1/2) Hope that helps?

Where did you get this paper from?

@tonydebling

3 жыл бұрын

I pulled questions from various revision sets provided by Edexcel.

@unknownzzz9089

3 жыл бұрын

@@tonydebling ah because I’m trying to find the model worked solutions

@tonydebling

3 жыл бұрын

@@unknownzzz9089 what do you expect beyond text in videos?

@unknownzzz9089

3 жыл бұрын

@@tonydebling Yes as you need method to get full marks in exam

@unknownzzz9089

3 жыл бұрын

The first question, their is a another step to get to the required form which you don't show

Where do u get ur questions from

@tonydebling

2 жыл бұрын

Edexcel past papers and sample papers

@solux9396

2 жыл бұрын

@@tonydebling thanks mate love the vids helping me through a level

I’m gonna fail the exam

@tallyinc9390

2 жыл бұрын

Did u fail?

@azp_ad4m277

Жыл бұрын

me too(

@emiliamocko-sugars8920

Жыл бұрын

i have mocks today hahahahahaha it’s in an hour im so fucked man

@amman3k971

Жыл бұрын

Ending up getting Ds in my y12 mocks, in the same boat g

@elite6804

Жыл бұрын

I got my mocks tomorrow I’m finished

Can i use this for ocr???

@tonydebling

2 жыл бұрын

Yes, OCR syllabus is the same as Edexcel