Match the equation with the Direction Field

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SUMMARY

The discussion centers on matching the direction field to the differential equation y' = y - t. Participants emphasize that each arrow in the direction field represents the slope of the function at specific points. To accurately match the equation to the direction field, one should consider straight line solutions of the form y = at + b. Understanding that the derivative indicates the slope of the tangent line at a point (t, y(t)) is crucial for this matching process.

PREREQUISITES
  • Understanding of differential equations, specifically first-order linear equations.
  • Familiarity with direction fields and their graphical representation.
  • Knowledge of slope and tangent lines in calculus.
  • Ability to manipulate linear equations in the form y = at + b.
NEXT STEPS
  • Study the construction and interpretation of direction fields for differential equations.
  • Learn about first-order linear differential equations and their solutions.
  • Explore graphical methods for solving differential equations.
  • Investigate the relationship between derivatives and slopes of functions.
USEFUL FOR

Students studying calculus, particularly those focusing on differential equations, as well as educators seeking to enhance their teaching methods for visualizing solutions to such equations.

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Homework Statement


Which of the following direction fields corresponds to the equation:

y' = y-t

I have attached an image of the direction fields


Homework Equations





The Attempt at a Solution


I get that each arrow represents the slope of the function at that point, but I'm not sure how I'm supposed to match the equation to the direction field without knowing what the function is.

Help is appreciated.
 

Attachments

  • math 2214 quiz 2.png
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Try looking for straight line solutions, y = at+b.
 
As the derivative is graphically the slope of the tangent line at a given point on the function, at the point (t, y(t)) the direction field should match the value of y'.
 

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