How Do I Tackle Basic Integration in Economics After a Long Break?

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Discussion Overview

The discussion revolves around the challenges of understanding basic integration concepts in the context of an economics class, particularly after a significant break from calculus. Participants seek clarification on integration symbols, processes, and the application of the fundamental theorem of calculus.

Discussion Character

  • Homework-related
  • Conceptual clarification
  • Technical explanation

Main Points Raised

  • One participant expresses confusion about integration symbols and the steps involved in solving integration problems after a long absence from calculus.
  • Another participant inquires about the individual's understanding of elementary integrals and familiarity with exponential and logarithmic functions.
  • A participant mentions they can guess their way through basic elementary integrals but seeks further clarification.
  • There is a question about the meaning of "dx," which is explained as the change in x.
  • A suggestion is made to refer to the Riemann integral for more information on integration.
  • A participant asks how to solve an integral after integrating it, specifically regarding the evaluation of limits in the context of an example involving e^ln(1+t).
  • Another participant references the fundamental theorem of calculus, explaining that one should evaluate the integral at the upper and lower limits and subtract the results.
  • A hint is provided regarding the simplification of e^ln(1+t) by noting that they are inverse functions.

Areas of Agreement / Disagreement

The discussion reflects a range of understanding among participants, with some expressing confusion and others providing clarification. There is no consensus on the best approach to tackle the integration problem, and multiple viewpoints on the understanding of integration concepts are present.

Contextual Notes

Participants have varying levels of familiarity with calculus concepts, and there are unresolved questions about specific integration techniques and their applications in economics.

Who May Find This Useful

Individuals returning to calculus after a break, students in economics courses requiring integration, and those seeking clarification on fundamental calculus concepts.

vaxop
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I have no idea what this means...
Im taking a economics class and its been 4 years since I did any calculus work, and I am completely in awe at what I am looking at here

What do the symbols mean? How do you go from step 1 to step 2 to step 3?

This is one tiny tiny bit of my course but I've been spending hours on it.. any help would be greatly appreciated :)
:-p
 

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Well, how much do you understand? Do you know elementary integrals, and are you familiar with the exponential and logarithmic functions?
 
i can guess my way through basic elementary integrals
 
Last edited:
what does "dx" mean?
 
thanks all its making a lot more sense
after you have integrated an integral, what do you do with it to 'solve' it using the upper and lower limits?
for example, in the example the answer is e^ln(1+t) from 0 to n..
how can i solve this now?
 
See: Fundamental theorem of calculus (Scroll down to Formal Statements)

Basically you evaluate your answer at n and from that subtract the answer evaluated at 0 if your limits happen to be 0 and n.
 
Also, do you see any way to simplify e^ln(1+t)? Hint: they're inverse functions.
 

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