First Derivative? 1st physics calculus class-help

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SUMMARY

The discussion focuses on calculating the velocity of a particle given its position function, x = 7.8 + 9.2t - 2.1t³. To find the velocity at t = 3.5 seconds, participants emphasize the importance of differentiation. The derivative of the position function, d/dt(7.8 + 9.2t - 2.1t³), is computed using the power rule, resulting in the velocity function. The correct application of differentiation techniques, particularly the power rule, is crucial for solving such physics calculus problems.

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  • Understanding of calculus concepts, specifically differentiation
  • Familiarity with the power rule of derivatives
  • Basic knowledge of physics, particularly motion equations
  • Ability to manipulate polynomial expressions
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  • Study the power rule of differentiation in depth
  • Learn how to apply derivatives in physics problems involving motion
  • Explore the concept of higher-order derivatives and their physical interpretations
  • Practice solving similar problems involving polynomial functions and their derivatives
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Students in introductory physics and calculus courses, educators teaching differentiation techniques, and anyone seeking to understand the application of calculus in motion analysis.

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the position of a particle on the x-axis is given:
x = 7.8 + 9.2t -2.1t^3

what is the velocity at t = 3.5 s ?

so i need to find the derivative of d/dt (7.8 + 9.2t -2.1t^3)

i'm completely lost on how to find it. thanks.
 
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Look up at the formula its simple plug in pro

d/dt(constatnt)=0
and
[tex]\frac{dx^n}{dt}=nx^{n-1}\frac{dx}{dt}[/tex]
 
Thanks. That was really easy now that I see the correct formula. Differentiation by exponent.
 

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