This man's tone of voice describes my enthusiasm for maths exactly.
@Ripler
Жыл бұрын
lmfao
@jiayaoweng1920
Жыл бұрын
literally bro
@almaazsalie2859
3 жыл бұрын
*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
3 жыл бұрын
Check out the Formula Booklet videos
@leohjoon4409
3 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
@tonydebling
2 жыл бұрын
@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]
@altairusti2926
2 жыл бұрын
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
2 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
2 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
Жыл бұрын
yeah me too!
@eddyhooper2909
25 күн бұрын
He added one to both sides I think
@GCSEALevelMaths2025
3 жыл бұрын
Great video sir keep up your fantastic work. I make similar videos.
@eddyhooper2909
25 күн бұрын
Hi, are you planning to create a video like these for A2 pure maths? I know there are some for applied, but A2 pure would be really helpful. Thanks
@npdap
2 жыл бұрын
Thank u so much!! Good luck everyone for the paper🤝
@pip2162
2 жыл бұрын
You doing WJEC?
@npdap
2 жыл бұрын
@@pip2162 im doing edexcel mate
@pip2162
2 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 🥲
@albinalex6435
3 жыл бұрын
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
3 жыл бұрын
I do do online tutorials. I charge £30 for 40mins. Let me know if you are interested. Email tonydebling@gmail.com
@albinalex6435
3 жыл бұрын
@@tonydebling if you can do an hour for £30 I will be interested
@tonydebling
3 жыл бұрын
@@albinalex6435 Sorry don't negotiate on these rates.
@albinalex6435
3 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
@el-et4cg
3 жыл бұрын
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
3 жыл бұрын
@@usmaanafzal3743 this doesn't make much sense to me :/ would never think to add 1 to both sides in an exam
@edded2487
3 жыл бұрын
as it should be -1 on both sides
@poscii754
Жыл бұрын
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.
@ahmadferozali9297
3 жыл бұрын
thank you very very much
@big_guy6507
10 ай бұрын
Hey there. Would there not be a 'c' variable when you integrate the equation within the brackets at 17:10?
@tonydebling
10 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.
@husnainzaheer4241
Ай бұрын
how do you know whether to do/ the y-10 or not i keep just subbing in the y value. pls help
@tonydebling
Ай бұрын
Which question please?
@hamburger7478
11 ай бұрын
can you make a similar video but on A2 stuff pls?
@lol.1296
Жыл бұрын
Your vids are very helpful however i don’t get how you got the two in the first question
@tonydebling
Жыл бұрын
Add 1 + Sin(^2)x to both sides
@lol.1296
Жыл бұрын
Why do we have to add 1?
@1My3My9
Жыл бұрын
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
@eddyhooper2909
25 күн бұрын
@@1My3My9 They're perpendicular to the radius of the circle, which (I think) would be the normal.
@1My3My9
Жыл бұрын
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
@goldenrainbow745
3 жыл бұрын
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.
@tunatunes
3 жыл бұрын
Can i use this for ocr???
@tonydebling
3 жыл бұрын
Yep, It's fine for OCR.
@benfrost2714
2 жыл бұрын
great help cheers
@amser7916
3 ай бұрын
maths in 1hr lets lock in🙌
@clairo.9619
Жыл бұрын
thank you so much :)
@yz7980
Жыл бұрын
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?
@janasherif4536
3 жыл бұрын
Where is the sketching graph and binomial expansion
@nikhilramchurnn7946
3 жыл бұрын
In the video before this one
@almaazsalie2859
3 жыл бұрын
Hi! not sure if this is a little late but its over here - kzitem.info/news/bejne/u6990oyjq6F5rKQ
@unknownzzz9089
3 жыл бұрын
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
@rjforshort4415
3 жыл бұрын
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.
@professorpepe2732
2 жыл бұрын
I’m gonna fail the exam
@tallyinc9390
2 жыл бұрын
Did u fail?
@azp_ad4m277
2 жыл бұрын
me too(
@emiliamocko-sugars8920
2 жыл бұрын
i have mocks today hahahahahaha it’s in an hour im so fucked man
@amman3k971
2 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
@LeviParsons31
Жыл бұрын
Hello to everyone watching this the night before exams ✌️
@lucawills9179
2 жыл бұрын
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?
@solux9396
2 жыл бұрын
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
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