calculating derivative (2 Viewers)

[zzephyr]

lol i forgot how to do simple maths someone help please

 

[Squar3root]

not sure if srs

 

[Squar3root]

use f(x+h) - f(x) / h and then simplify clean up and then sub in 2

 

[psyc1011]

Google.

 

[AztecWarrior]

f`(x)= 3-2x
f`(2)= 3-2(2)
Therefore f`(2)= -1

 

[DatAtarLyfe]

View attachment 32349
lol i forgot how to do simple maths someone help please

Tell me your in year 11 atleast..

 

[InteGrand]

f`(x)= 3-2x
f`(2)= 3-2(2)
Therefore f`(2)= -1

It's asking for a proof from first principles (i.e. using the definition of the derivative as a limit of a difference quotient).

 

[AztecWarrior]

It's asking for a proof from first principles (i.e. using the definition of the derivative as a limit of a difference quotient).

I know, but it's hard spelling out first principles on this forum and it was just to give the answer.

 

[psyc1011]

f`(x)= 3-2x
f`(2)= 3-2(2)
Therefore f`(2)= -1

0/2

Tell me your in year 11 atleast..

How is that relevant?

 

[AztecWarrior]

Your such an expert on maths are you psyc1011????

 

[psyc1011]

Your such an expert on maths are you psyc1011????

Confusing fragment, "Your such"

 

[AztecWarrior]

Confusing fragment, "Your such"

you're such an expert on maths are you???

 

[DatAtarLyfe]

How is that relevant?

Its relevant considering he can't use the first principle to solve a derivative, and if he is in year 12, then i believe it could be quite detrimental to their HSC. It's one thing just showing them how to do it but if they don't understand the concept behind it then they're never gonna know how to do it.

 

[psyc1011]

you're such an expert on maths are you???

1

 

[zzephyr]

Im a first year uni student and i wasnt joking. I forgot how to maths

 

[AztecWarrior]

1

????

 

[psyc1011]

Its relevant considering he can't use the first principle to solve a derivative, and if he is in year 12, then i believe it could be quite detrimental to their HSC. It's one thing just showing them how to do it but if they don't understand the concept behind it then they're never gonna know how to do it.

Your point could have been demonstrated if you said "Tell me your not in year 11 or 12.."

 

[psyc1011]

????

0

 

[teridax]

Your point could have been demonstrated if you said "Tell me your not in year 11 or 12.."

why are you so picky with phrases in sentences

are you that much of a grammar nazi

and furthermore, ironic that you try to 'correct' him when you yourself can't differentiate b/w your and you're lol

(i swear psyc1011 is a troll)

 

[AztecWarrior]

0

Ahh, it's your maths ability, which is diminishing as you attempt to figure out the problem! (