Question

Differentiation

Answer 1

y = (4 - 3x)^9

Answer 2

slowpoke ;P

Answer 3

ok so remember how the chain rule works?

Answer 4

what is your u=? du=?

Answer 5

then compute again

Answer 6

can u solve this problem for me please in dy/dx form

Answer 7

no.. You know I don't do that

Answer 8

remember dy/dx=f'(x)

Answer 9

they are equivalent

Answer 10

I wan a direct answer actually by that i can solve future problems
{ I know the code of conduct}
BUT PLEASE I BEG YOU

Answer 11

I will understand it you don't worry

Answer 12

noooo nevaaaaa

Answer 13

so u=? du=?

Answer 14

how come u have differentiation in 10th grade ?

Answer 15

I am doing IIT do they started teaching it in another class

Answer 16

\(y = (4 - 3x)^9\)

say \(u = 4-3x\)

Answer 17

Because this level calculus problems is too kiddish for iit

Answer 18

\(y = (u)^9\)

Answer 19

ok

Answer 20

knw how to differentiate this funciton with respect to \(u\) ?

Answer 21

9u^8

Answer 22

yes !
but u dont want just dy/du.
u want dy/dx

Answer 23

yes

Answer 24

use chain rule :

\(\dfrac{dy}{dx} = \dfrac{dy}{du} \times \dfrac{du}{dx}\)

Answer 25

\(y = (u)^9\) , \(u = 4-3x\)

\(\dfrac{dy}{dx} = \dfrac{dy}{du} \times \dfrac{du}{dx}\)

\(~~~~~= 9u^8 \times \dfrac{du}{dx}\)

Answer 26

find out du/dx and plugin

Answer 27

I think i got it wait

Answer 28

yes, these are easy to do on one's own.
explaining is bit tricky..

Answer 29

How to differentiate u
d/dx of 4 would be 0

Answer 30

yes

Answer 31

\(u = 4-3x\)

\(\dfrac{du}{dx} = 0 - 3 \)

Answer 32

-3

Answer 33

so,
9x*8 * -3
-27^8 ?

Answer 34

9x^8 i meant

Answer 35

\(y = (u)^9 \) , \(u = 4-3x\)

\(\dfrac{dy}{dx} = \dfrac{dy}{du} \times \dfrac{du}{dx}\)

\(~~~~~= 9u^8 \times (-3)\)

Answer 36

plug back the value of \(u\) ^

Answer 37

27(4 - 3x )^8

Answer 38

lol who ate the negative sign

Answer 39

yeah typo lol

Answer 40

\(y = (u)^9 \) , \(u = 4-3x\)

\(\dfrac{dy}{dx} = \dfrac{dy}{du} \times \dfrac{du}{dx}\)

\(~~~~~= 9u^8 \times (-3)\)

\(~~~~~= 9(4-3x)^8 \times (-3)\)

\(~~~~~= -27(4-3x)^8\)

Answer 41

^^thats how u do it step by step.

but once u get practice, u can do it in single line

Answer 42

\(y = (4 - 3x)^9 \)


\(\dfrac{dy}{dx} = 9(4-3x)^8 (4-3x)' = 9(4-3x)^8(-3)\)

Answer 43

Thank you once again

Answer 44

np :)

Answer 45

(thank you )^infinity