Question

can you help me to my problems, can you show me the proper way to solve this one to east to understant? y =(x + 1) (2x - 1) diff calculus. thanks

Answer 1

find the derivative again?
multiply out first

Answer 2

yes sir, :((

Answer 3

its hard to me to find the derivative :((

Answer 4

yeah i know
lets multiply first then it will be not too hard at all
what you get when you multiply
\[(x+1)(2x-1)\]

Answer 5

1?

Answer 6

pardon?

Answer 7

you know what i mean by "multiply"? remove the parentheses using the distributive law
or what criminal math teacher call "foil"

Answer 8

so if we multiply?

Answer 9

yes multiply
what do you get ?

Answer 10

2? (x +1 ) (2x -1)

Answer 11

correct me if im wrong

Answer 12

i guess it is not clear what i am saying

Answer 13

sorry :(

Answer 14

for example
\[(x+5)(x+4)=x^2+5x+4x+20=x^2+9x+20\]

Answer 15

ahh so it will happen is 1x + 2x^2?

Answer 16

er no

Answer 17

Sorry to intrude but to be correct she said easy to understand lol and if i was new to this, i would think what you wrote was Complex Calculus problems

Answer 18

I am just saying @satellite73

Answer 19

@Here_to_Help15 if you were going the find the derivative of
\[y=(x +1 ) (2x -1)\] i am sure step one would be to multiply right?
not for example use the product rule

Answer 20

Yes i believe so

Answer 21

without this skill (not to be rude) it is silly to be learning calculus

Answer 22

lol i agree :D

Answer 23

lets begin again. sir satellite

Answer 24

See here if you are going to help her your going to lower your high intense brain down a notch and explain step by step

Answer 25

1) multiply out
once you have done so, we can use the
2) power rule \(\frac{d}{dx}[x^n]=nx^{n-1}\) and it will be brief

Answer 26

i am not doing anything high powered at all, just trying to say "multiply" i have no other way of saying it
distribute
foil
whatever

Answer 27

Oh quick question ik this happens to be irrelevant but why does ppls reply say its from yesterday like yours for instance says yesterday?

Answer 28

Is it because OS is lagging or my internet connection is bad?

Answer 29

sir @satellite73 if we use the power rule what wil gonna happen to our solving?

Answer 30

can you show me the proper way to solve again sir to easy to understand?

Answer 31

\[y=(x +1 ) (2x -1)\]
\[y=2x^2+2x-x-1\\
y=2x^2+x-1\] is a start

Answer 32

so the y+ 2x^2 + 2 -1? the final?

Answer 33

no that is what you get before you take the derivative
using the power rule you get
\[y'=4x+1\]

Answer 34

so sir that the final right?

Answer 35

thank you sir @satellite73 ill appreciate it for helping me :))