Derivative Help: differentiate using product rule

Click For Summary
SUMMARY

The discussion focuses on differentiating the function (1-2x3+x2)((1/x3)+1) using the product rule. The correct application of the product rule is f'g(x) + g'f(x), where f'(x) = -6x3 + 2x and g'(x) = -1/x4. The participant encountered errors in calculating g'(x) and f'(x)g(x), highlighting the importance of accurate differentiation in calculus.

PREREQUISITES
  • Understanding of the product rule in calculus
  • Knowledge of differentiation techniques for polynomial functions
  • Familiarity with rational functions and their derivatives
  • Basic algebraic manipulation skills
NEXT STEPS
  • Review the product rule for differentiation in calculus
  • Practice differentiating polynomial and rational functions
  • Learn how to simplify expressions after differentiation
  • Explore common mistakes in calculus differentiation and how to avoid them
USEFUL FOR

Students studying calculus, particularly those learning about differentiation techniques, and educators seeking to clarify common errors in applying the product rule.

digidako
Messages
6
Reaction score
0

Homework Statement



(1-2x3+x2)((1/x3)+1)

Homework Equations



f'g(x)+g'f(x)
f'(x)=-6x3+2x
g'(x)=(-1/x4)

The Attempt at a Solution



I found what i believe to be the derivative of both f(x) & g(x) and used the product rule to get to where I am stuck right now:

[(-6x2+2x)(1/x3)]+[(-1/x4)(1-2x3+x2)
 
Last edited:
Physics news on Phys.org
digidako said:

Homework Statement



(1-2x3+x2)((1/x3)+1)

Homework Equations



f'g(x)+g'f(x)
f'(x)=-6x3+2x
g'(x)=(-1/x4)

The Attempt at a Solution



I found what i believe to be the derivative of both f(x) & g(x) and used the product rule to get to where I am stuck right now:

[(-6x2+2x)(1/x3)]+[(-1/x4)(1-2x3+x2)
Your result for g'(x) is wrong, assuming that g(x)=1/x3+1. Your f'(x)g(x) is wrong too.
 

Similar threads

  • · Replies 5 ·
Replies
5
Views
3K
Replies
5
Views
3K
Replies
3
Views
2K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 11 ·
Replies
11
Views
4K
  • · Replies 9 ·
Replies
9
Views
4K
Replies
2
Views
2K
Replies
2
Views
2K
  • · Replies 1 ·
Replies
1
Views
1K