no it doesn't equal x^3 + 5/2x^2 +10x - 35 in differentiating or integrating. the rules of differentiating are: add 1 to the power divide 1 by the new power put +c after when we differentiate 2x^3+9x^2+5x+2 we get 6x^2+18+5 so for 2x^3 we would add 1 to the power 3 and get the new power 4, then we divide it by 4, and then for 9^2 we add the 1 to the power of 2 and get the new power 3 and then we divide it by 3 and for 5x there is no power, so I cannot add 1 to the power that is not there by 5x and the same goes for 2 so 2x^3+9x^2+5x+2= 6x^2+18+5 in differential equations. The rules of integrating are: multiply by the power subtract 1 from the power when we integrate 2x^3+9x^2+5x+2 we get 6x^2+18x+5 so for 2x^3 we do 2*3=6 and then we subtract the 3 from the ^3 to get^2 then we get 6x^2 and for 9x^2 we times 9 by 2 which is 18 and subtract the power 2 by 1 and the power 1 makes no difference after putting after 18 since it means times by 1 so there is no point adding it after 18. for 5x+2 1'5 is 5 and when we subtract x from 5x by 1 we are doing 5x^1-1=5x which gives us the value 5 and for 1 there is no power to times by and there is no power to subtract by therefore we cannot differentiate that. 2x^3+9x^2+5x+2= 6x^2+18x+5
@@rosette_renah @Ffk @sarah perera no c is -31 3=34+c -34 on both sides means 3-34=c where 3-34=-31 the reason 3-34=31 is because you are going back on the number line by 34 steps which lands on step -34.
2 and a half * 4 is 10 dude
Ekram Ehsas damn - yes it is.
This is indeed an introduction. Thanks
Fantastic. 12.06 we are human and it's all part if it. More more please keep me updated with your brilliant teaching.
These videos help me so much thank you!!!!!!!!!!!!
Like the way you simplify it 👍👍
your videos are helpful
Thank you.
Great video
for the first longer written question the answer should be x^3 + 5/2x^2 +10x - 35 :)
no it doesn't equal x^3 + 5/2x^2 +10x - 35 in differentiating or integrating. the rules of differentiating are:
add 1 to the power
divide 1 by the new power
put +c after
when we differentiate 2x^3+9x^2+5x+2 we get 6x^2+18+5
so for 2x^3 we would add 1 to the power 3 and get the new power 4, then we divide it by 4, and then for 9^2 we add the 1 to the power of 2 and get the new power 3 and then we divide it by 3 and for 5x there is no power, so I cannot add 1 to the power that is not there by 5x and the same goes for 2 so 2x^3+9x^2+5x+2= 6x^2+18+5 in differential equations.
The rules of integrating are:
multiply by the power
subtract 1 from the power
when we integrate 2x^3+9x^2+5x+2 we get 6x^2+18x+5
so for 2x^3 we do 2*3=6 and then we subtract the 3 from the ^3 to get^2 then we get 6x^2 and for 9x^2 we times 9 by 2 which is 18 and subtract the power 2 by 1 and the power 1 makes no difference after putting after 18 since it means times by 1 so there is no point adding it after 18. for 5x+2 1'5 is 5 and when we subtract x from 5x by 1 we are doing 5x^1-1=5x which gives us the value 5 and for 1 there is no power to times by and there is no power to subtract by therefore we cannot differentiate that. 2x^3+9x^2+5x+2= 6x^2+18x+5
@@yusufdadkhah7561 I meant for the first long question, where they worked out 5/2(2)^2 = 6, when it is 10, thus making C equal to -35 instead
@@astrophyz9899 I agree. That's what I got 2.5 x4 =10 no the 6 mentioned
Thank you
Is it necessary we add +c to the integration and can we add any letter other than c hope you understand what I'm trying to say please
5/2 X 4 is 10 bro
SIR!!!!!!!!!!!
The answer at the 12.25 minute must be -35 right?
yes
Exactly
@@rosette_renah @Ffk @sarah perera no c is -31 3=34+c -34 on both sides means 3-34=c where 3-34=-31 the reason 3-34=31 is because you are going back on the number line by 34 steps which lands on step -34.
Good video I like your vids, but around about 12minutes you made a mistake with the 2 squared. I think C is 19.
@andrew vest
c is -31, there is only 1 mistake at 12:08. 2.5 × 2 × 1.5 =7.5, 7.5^2=56.25. so he should have done 3=8+56.25+20+c instead.
There are a few errors here...
2.5*4 is 10. Great video tho.
That's what I thought.
bro 2.5 *4...come on bro