Logarithmic Differentiation for y=x^{sin(x)}

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SUMMARY

The discussion focuses on finding the derivative of the function y = x^{sin(x)} using logarithmic differentiation. The solution involves taking the natural logarithm of both sides, resulting in the equation lny = sin(x)ln(x). The derivative is then calculated as (y') = [sin(x)(1/x) + ln(x)cos(x)]y. Participants confirm the correctness of the solution and suggest substituting x^{sin(x)} back into the final answer for clarity.

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  • Understanding of logarithmic differentiation
  • Familiarity with trigonometric functions: sin(x), cos(x)
  • Knowledge of natural logarithms and their properties
  • Basic calculus concepts, including derivatives
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Homework Statement



Find y' using logarithmic differentiation if [tex]y=x^{sin(x)}[/tex]

Homework Equations


The Attempt at a Solution



[tex]lny=sin(x)ln(x)[/tex]

[tex]\frac{1}{y}(y')=sin(x)(\frac{1}{x})+ln(x)\cdot cos(x)[/tex]

[tex](y')=[sin(x)(\frac{1}{x})+ln(x)\cdot cos(x)]y[/tex]

Did I do this one properly?
Thanks in advance.
 
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It looks fine to me.
 
Looks good to me.

Depending on what the question wants, you may want to sub in [tex]x^{\sin(x)}[/tex] for [tex]y[/tex] in your final answer. (LaTeX tip: you can use \sin, \cos, and \ln to get "normal" text for sin, cos, ln, etc.)
 

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