Epsilon-Delta Limit

[Nurfthug]

drugs are bad....mkay?

[wsgalinaitis]

If you already know what it is all about you can paste it together, but if you are trying to learn this material from scratch don't use this video. It jumps all around and demeans this topic. Which never helps teach anything.

[cloudstrife602]

only time im using this is calc1 on 1 test and the final... :P



[BunnyHanyou]

How am I supposed to do this without a calculator?

We can't use calculators in my calc class. . .I know theres a way to do it without one.

[chirrrs]

interval delta @ 4:20 = 0.27 right?

[elsleepyshadow]

@chirrrs yep



[daledude66]

The ending sums this up pretty well. The critical point that this is proving is that for every epsilon, no matter how small, there exists a delta that will produce a function value within a distance of epsilon from L. Or in English, the function really DOES approach 4 as x approaches 2.

[theschoolofchuck]

@daledude66 Before this definition came around, they used to compare the derivative of a function to the slope of a line tangent to the function. The only problem is that a tangent line has only one point in common with the function it is tangent to, and you need two points to define a line. The second point used to calculate the rate of change was an infinitely small distance from the point of interest. These were called infinitesimals.

[daledude66]

@theschoolofchuck Sounds kinda like the limit definition of a derivitave.

[Mejiera12]

thanks for the insight to these problems and you dont sound fat.

[rohit91]

u sound fat