9.2.2 AP Calculus Exam -- slope field for which DE

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SUMMARY

The discussion focuses on solving a differential equation (DE) related to slope fields for the AP Calculus Exam, specifically referencing the equation of the line \(y = -x - 1\). Participants suggest that while some can solve the DE through observation, others recommend separating variables and integrating to derive the equation. The slopes near the line are noted to approach a value of -1, confirming the line's relevance to the problem. The consensus leans towards option C as the correct answer based on the analysis of the slope field.

PREREQUISITES
  • Understanding of differential equations and slope fields
  • Knowledge of variable separation and integration techniques
  • Familiarity with the AP Calculus Exam format and question types
  • Ability to interpret graphical representations of functions
NEXT STEPS
  • Study the method of separating variables in differential equations
  • Practice interpreting slope fields and their corresponding differential equations
  • Review AP Calculus exam strategies for tackling multiple-choice questions
  • Explore the concept of stability in slope fields and its implications
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Students preparing for the AP Calculus Exam, educators teaching calculus concepts, and anyone interested in understanding differential equations and slope fields.

karush
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View attachment 9324

ok probably if one did a lot of these this could be solved by observation
others separate the variables and take to Integral to get the equation
 

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karush said:
ok probably if one did a lot of these this could be solved by observation
others separate the variables and take to Integral to get the equation

meant to be done by observation ... note the slopes near this line are close to a value of -1

the equation of the line is about $\color{red}y = -x-1 \implies y+x=-1$

what do you think?
 

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that looks like C

but how would you it was a line?
 

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