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Christos
 2 years ago
Derivatives,
There is this problem that asks me to find the derivative of f(x)=2x^2 ONLY by making use of this formula: f'(x)=lim(h>0)(f(x+h)f(x))/h
My Question is this:
http://screencast.com/t/fdJEOQduGCj
Christos
 2 years ago
Derivatives, There is this problem that asks me to find the derivative of f(x)=2x^2 ONLY by making use of this formula: f'(x)=lim(h>0)(f(x+h)f(x))/h My Question is this: http://screencast.com/t/fdJEOQduGCj

This Question is Closed

AravindG
 2 years ago
Best ResponseYou've already chosen the best response.1Yep just use that formula

julian25
 2 years ago
Best ResponseYou've already chosen the best response.0?????? it is right?????? the derivative is 4x

Christos
 2 years ago
Best ResponseYou've already chosen the best response.0f(x)= 2x^2 f(x=h)= 2(x+h)^2

AravindG
 2 years ago
Best ResponseYou've already chosen the best response.1f(x+h)= 2x^2 f(x=h)= 2(x+h)^2

Christos
 2 years ago
Best ResponseYou've already chosen the best response.0But my approach (the one with the red letters) gives 0. And I didn't do any mistake

Christos
 2 years ago
Best ResponseYou've already chosen the best response.0thats what I said @AravindG

AravindG
 2 years ago
Best ResponseYou've already chosen the best response.1What is your problem ? You are getting correct answer 4x ?

Christos
 2 years ago
Best ResponseYou've already chosen the best response.0No, look. The black letters is the solution manual. On the other hand the RED letters are my approach. The solution gives 4x. My solution gives 0. Both solutions doesn't have any mathematical mistake. ( and it's driving me crazy)

AravindG
 2 years ago
Best ResponseYou've already chosen the best response.1Why 0 ? You are told x=0 ?

AravindG
 2 years ago
Best ResponseYou've already chosen the best response.1that will be 0+4x .I dont see 0 anywhere

Christos
 2 years ago
Best ResponseYou've already chosen the best response.0Do you see this http://screencast.com/t/YqaRwsAr5b

AravindG
 2 years ago
Best ResponseYou've already chosen the best response.1so option 1 will be correct

Christos
 2 years ago
Best ResponseYou've already chosen the best response.0buth both options doesn't have any mathematical mistakes. Agree?

AravindG
 2 years ago
Best ResponseYou've already chosen the best response.1tell me which options you are speaking of

AravindG
 2 years ago
Best ResponseYou've already chosen the best response.1Which do you mean by saying both ?

Christos
 2 years ago
Best ResponseYou've already chosen the best response.0Wait. Let me write the whole thing here on Open Study , 1 sec

Christos
 2 years ago
Best ResponseYou've already chosen the best response.0Forget it I got my mistake, jeez and phew

AravindG
 2 years ago
Best ResponseYou've already chosen the best response.1lol Great you figured it out yourself :)
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