Thursday

March 5, 2015

March 5, 2015

Posted by **kajal** on Monday, September 26, 2011 at 1:12pm.

limit

delta x --> f(x + delta x)- f(x)/delta x

can someone please help me

- calculus -
**Steve**, Tuesday, September 27, 2011 at 10:57amI assume you mean the limit as delta x -> 0.

I'll use delta x = h for simplicity

(f(x + h) - f(x))/h

= (4(x+h)^2 - 3(x+h) - (4x^2 - 3x))/h

= (4x^2 + 8xh + 4h^2 - 3x - 3h - 4x^2 + 3x)/h

= (8xh + 4h^2 - 3h)/h

= 8x - 3 + 4h

Limit as h->0 = 8x-3

Looks like the derivative, eh?

**Answer this Question**

**Related Questions**

CALCULUS help please - Find the following limit where f(x) = 4x^2 − 3x. ...

calculus - limit as delta x approaches 0 when f(x) = 4/ sqr x Have to use the (F...

CHEMISTRY - Please explain. The enthalpy changes for two different hydrogenation...

Chemistry - Please explain. The enthalpy changes for two different ...

Chemistry(Please check answers) - 1) For a reaction delta Go is more negative ...

Chemistry - 2CH3CH2CH2OH(l)+9O2(g)→6CO2(g)+8H2O(g) I have to find the ...

Calculus-Solved - Incorrect - calculate delta y for f(x)= x^(3/2) with x= 4 and ...

math - Compute delta(y) and dy for the given values of x and dx=delta(x) y=x^2...

Chemistry - Clapeyron equation: dp/dT = ΔS / ΔV My textbook says, ...

calculus - Find the limit L. Then find delta > 0 such that |f(x) - L| < 0....