What I usually do is expand what is given. So a(x+h)^2 + h = a(x^2 + 2hx + h^2) + h = ax^2 + 2ahx + ah^2 + h Now if they tell you the quadratic equation is 3x^2 + 5x + 1, we can equate the coefficients of the two expressions. a = 3 2ah = 5 (then solve for h) ah^2 + h = 1. It's difficult for me to explain in the reply. You can check my playlist. There should be an example somewhere there.
Hello Mr David I Was Just Looking At Your Video Based On Fuctions And I Came Across A Question But I Am Not Sure If I Have To Cross Multiply. The function of f(x) is 5(x)-4 over 3 and it says to write an expression in terms of x for f inverse of x can you explain please
@@thorockoOfficialfortnite There's no error after you have the 34/3 you have to add the 3..so 34/3+3/1 when you add these fractions you would get the lcm as 3...3 divided by 3 is 1 so you multiply the top by 1..for the second fraction... 3 divided by 1 is 3 so you multiply the top by 3.. the two top numbers would be 34+9=43/3
This is the best tutor online. With him I know I'll surely pass my exam this year♥️♥️♥️
thank you so much, this is very helpful since the last 3 cxc maths paper I did asked to kind the inverse of given functions....
+Petal Archer So if it comes tomorrow you should get it correct.... Good luck
Hello good day, how did you get 43/3 please? because my calculator is giving me a different figure? Thank you
Can u do a video on vectors and matrices please
@CSEC Maths can you give me the link to the other video you said you had on functions and relations
Hi can you explain how to express quadratic functions in the form a(x+h) squared +h where a, h and K are constants please thanks
What I usually do is expand what is given. So
a(x+h)^2 + h = a(x^2 + 2hx + h^2) + h = ax^2 + 2ahx + ah^2 + h
Now if they tell you the quadratic equation is 3x^2 + 5x + 1, we can equate the coefficients of the two expressions.
a = 3
2ah = 5 (then solve for h)
ah^2 + h = 1.
It's difficult for me to explain in the reply. You can check my playlist. There should be an example somewhere there.
Wait what
I'm so not ready 😧
its so long now but how did u do
@@raspberry7197 lmao
I feel like I'm not ready :'(
how did u do?
@@catcat4851 she got a v 💀💀
@@theyoungone5034 seriously?
@@ownitervi241 lol idk, I'm guessing
Thanks for the video but I thought u were moving a little too fast tho
Raja Graham that's why its a video you can hit pause or replay at any time...
Thank You Thank You Thank You🙏🏽😩
No scene....just share so others can benefit.
Thank you sir
Im confused shouldn’t 2x+1 be = to 3x at 4:50 in the video?
How you solve to get 43/3
thank you so so so sos os sossossosoossoossoso much
F (x) = 2×+1 f(2)=2(2)+1=4+1=5
Good
Hello Mr David I Was Just Looking At Your Video Based On Fuctions And I Came Across A Question But I Am Not Sure If I Have To Cross Multiply. The function of f(x) is 5(x)-4 over 3 and it says to write an expression in terms of x for f inverse of x can you explain please
Let y = 5x -4/3
Interchange x and y
x = 5y-4/3
Cross multiply
3x = 5y - 4
5y-4 = 3x
5y = 3x + 4
y = 3x + 4/5
THANKS ALOT !!!!!!!!!!
+Shashell Clarke No problem.
feel mi can watch this less than 12 hours before the exam and pass?? if u nuh blv ina me sym
😂😂suh mi feel rn
@@niekstv yh mn, so e guh fr 😅
So me feel rn
f(-1)=2(-1)+1=-2+1=-1
thank you
i understand now
+ronaldo reid Great. Good luck tomorrow.
Can you do another explaining functions
How did you get 43/3? I don’t understand
ah think it supposed to be 34/3...but he put 43 by mistake
@@thorockoOfficialfortnite There's no error after you have the 34/3 you have to add the 3..so 34/3+3/1 when you add these fractions you would get the lcm as 3...3 divided by 3 is 1 so you multiply the top by 1..for the second fraction... 3 divided by 1 is 3 so you multiply the top by 3.. the two top numbers would be 34+9=43/3
@@jolenekhan4.191 ohh ok thxsss
How did he get the 34/3
that is the fraction for 14.3....which is what you would've gotten if u had put it in a calculator
afternoon sir
How do you get 2x+2?
(6x + 6)/3 = 2x + 2
You are dividing each term by 3, 6x/3 + 6/3 = 2x + 2