Derivative of (-sqrt(1 + x^2)) / x: What Did I Do Wrong?

  • Thread starter Thread starter PhizKid
  • Start date Start date
  • Tags Tags
    quotient
Click For Summary
SUMMARY

The discussion focuses on differentiating the function (-sqrt(1 + x^2)) / x. The correct approach involves applying the quotient rule, represented by the formula [f'(x)g(x) - f(g)g'(x)] / [g(x)]^2. Users suggest verifying the input in Mathematica, as discrepancies may arise from incorrect entry or different forms of the output. Factoring (x^2 + 1)^(-1/2) from the numerator is recommended to simplify the expression further.

PREREQUISITES
  • Understanding of calculus, specifically differentiation techniques.
  • Familiarity with the quotient rule for derivatives.
  • Basic knowledge of algebraic simplification.
  • Experience using Mathematica for mathematical computations.
NEXT STEPS
  • Review the application of the quotient rule in calculus.
  • Learn how to simplify expressions involving square roots and fractions.
  • Explore the capabilities of Mathematica for verifying derivatives.
  • Study factoring techniques for algebraic expressions.
USEFUL FOR

Students studying calculus, educators teaching differentiation, and anyone seeking to improve their skills in algebraic manipulation and verification of mathematical results using software tools like Mathematica.

PhizKid
Messages
477
Reaction score
2

Homework Statement


Differentiate (-sqrt(1 + x^2)) / x


Homework Equations


[f'(x)g(x) - f(g)g'(x)] / [g(x)]^2


The Attempt at a Solution


NW7c8.png


I need to simplify it further, but before I do I checked it into Mathematica and it says the derivative is incorrect. What did I do wrong?
 
Physics news on Phys.org
What you did looks fine. It might be that what you typed into Mathematica isn't right. Or maybe Mathematica is just giving you the same thing in a different form. Try factoring (x2 + 1)-1/2 out of the two terms in the numerator.
 

Similar threads

  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 7 ·
Replies
7
Views
3K
Replies
2
Views
2K
  • · Replies 2 ·
Replies
2
Views
1K
Replies
1
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
Replies
16
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 10 ·
Replies
10
Views
3K