Understanding Derivatives: Function Relationships and Graph Interpretation

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SUMMARY

The discussion centers on the relationship between a function's behavior—specifically its rising and falling points—and its derivative. It is established that when a function f is increasing, its derivative f' is positive; conversely, when f is decreasing, f' is negative. At critical points, where the function reaches a high or low point, the derivative equals zero. Additionally, participants discuss identifying graphs representing position, velocity, and acceleration, emphasizing that acceleration is the derivative of velocity with respect to time.

PREREQUISITES
  • Understanding of basic calculus concepts, specifically derivatives.
  • Familiarity with graph interpretation in relation to functions.
  • Knowledge of the relationships between position, velocity, and acceleration.
  • Ability to plot and analyze graphs of functions and their derivatives.
NEXT STEPS
  • Study the Fundamental Theorem of Calculus to deepen understanding of derivatives and integrals.
  • Learn about critical points and their significance in function analysis.
  • Explore graphical representations of motion, specifically how to differentiate between position, velocity, and acceleration graphs.
  • Practice plotting functions and their derivatives to visualize relationships more clearly.
USEFUL FOR

Students studying calculus, educators teaching derivatives and graph interpretation, and anyone interested in the mathematical relationships between motion parameters such as position, velocity, and acceleration.

kLPantera
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Homework Statement



What is the relationship with a function's rising, falling, high point or low point to it's derivative?

The Attempt at a Solution



I have plotted my graphs, I can see that they intersect at the high and low points. But what is the relationship

Also on another note, I was wondering if anyone could tell me. When given 3 graphs, how do you tell which one is acceleration, which is velocity, and which is position?

Much Appreciated
 
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kLPantera said:

Homework Statement



What is the relationship with a function's rising, falling, high point or low point to it's derivative?
When the graph of a function f is rising, the derivative f' will be positive. When the graph of f is falling, f' < 0. At either a high point or a low point x0, f'(x) = 0.
kLPantera said:

The Attempt at a Solution



I have plotted my graphs, I can see that they intersect at the high and low points. But what is the relationship
What graphs are you talking about?
kLPantera said:
Also on another note, I was wondering if anyone could tell me. When given 3 graphs, how do you tell which one is acceleration, which is velocity, and which is position?
Assuming that the three graphs show the position, velocity, and acceleration of some particle, think about what I said at the beginning of my reply in relation to the position and velocity graphs.

For the acceleration graph, the acceleration is the derivative with respect to time, of the velocity. The same relationships hold as for position and velocity.
 
I have a graph of f and a graph of f'. That's what I meant by graphs. Sorry if it wasn't clear.

Thanks though!
 

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