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cuzzinBest ResponseYou've already chosen the best response.0
I'm a little stumped on this "Give f '(1) problems.
 one year ago

ParthKohliBest ResponseYou've already chosen the best response.0
First, find the derivative. What is \(f'(x)\)?
 one year ago

ParthKohliBest ResponseYou've already chosen the best response.0
No, no. It'd be\[f'(x) = {d \over dx}2x^2  x\]Do you know what derivative is?
 one year ago

febylailaniBest ResponseYou've already chosen the best response.0
Let f(x)=(2x^2x). Give f '(1). f'(x) = 4x f'(1) = 4(1) = 4 . am i right?
 one year ago

cuzzinBest ResponseYou've already chosen the best response.0
Well we are just starting the chapter on derivatives, so I'm still figuring them out. Mostly we've been dealing with finding the slope of tangent and normal lines.
 one year ago

ParthKohliBest ResponseYou've already chosen the best response.0
@febylailani I should point out that,\[f'(x) = 4x  1\]
 one year ago

ParthKohliBest ResponseYou've already chosen the best response.0
@cuzzin That includes differentiation too!
 one year ago

ParthKohliBest ResponseYou've already chosen the best response.0
\[f'(x) = 4x  1\]\[f'(1) = 4(1)  1\]
 one year ago

OmniscienceBest ResponseYou've already chosen the best response.0
I think you should write it as: \[\frac{d}{dx} \left(2x^{2}x\right) or \frac{d}{dx} 2x^2\frac{d}{dx} x\] Or people would get confused,which was evident :)
 one year ago

akash809Best ResponseYou've already chosen the best response.0
why to make things more complicated
 one year ago

ParthKohliBest ResponseYou've already chosen the best response.0
@Omniscience is pretty well till now, and then the power rule!:)
 one year ago

febylailaniBest ResponseYou've already chosen the best response.0
ah!! yup! sorry i forgot. careless _ aaaaaccckkkkk
 one year ago

cuzzinBest ResponseYou've already chosen the best response.0
Ok, where does the (4x1) come from?
 one year ago

febylailaniBest ResponseYou've already chosen the best response.0
from differential.
 one year ago

febylailaniBest ResponseYou've already chosen the best response.0
but differential is the short way. before that, there's limit. the formula is a.n.x^(n1). i.e. f(x) = 2x^3 ; a=2 ; n = 3 so, f'(x) = 2.3.x^(31) = 6x^2 cmiiw
 one year ago
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