Differentiation Question Concerning natural log

In summary, the derivative of ln(x) is 1/x. To differentiate a function with a natural log in it, you can use the chain rule and the derivative of ln(x). Yes, you can differentiate a natural log with respect to any variable. The derivative of ln(x) with respect to y would be 1/(xln(y)). Natural log(x) and ln(x) are just different notations for the same function, so their derivatives are also the same. To differentiate a natural log raised to a power, you can use the power rule and the derivative of ln(x).
  • #1
courtrigrad
1,236
2
Hello all

If [tex] y = e^3^\ln^(x^2) [/tex] find [tex] \frac {dy}{dx} [/tex]

So [tex] \frac {dy}{dx} =(3 (\frac {1}{x^2}) \* 2x e^3^\ln^(x^2) [/tex]

So the simplified answer is: [tex] \frac {6}{x} e^3^\ln^(x^2) [/tex]

Is this correct? IS there any other way of expressing the answer?

Thanks
 
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  • #2
Use your log rules.

[tex]e^{3 \ln x^2} \equiv e^{\ln x^6} \equiv x^6[/tex]

- Warren
 
  • #3
oh i see

So derivative would be [tex] 6x^5 [/tex]

didn't catch that

thanks
 
  • #4
Pretty much anytime you see e and ln stuck together like that, it means your teacher is trying to get you to use log rules.

- Warren
 

FAQ: Differentiation Question Concerning natural log

What is the derivative of ln(x)?

The derivative of ln(x) is 1/x.

How do you differentiate a function with a natural log in it?

To differentiate a function with a natural log in it, you can use the chain rule and the derivative of ln(x). For example, if you have the function f(x) = ln(x^2), you can rewrite it as f(x) = (ln(x))^2 and then use the chain rule to get f'(x) = 2ln(x)/x.

Can you differentiate a natural log with respect to a variable other than x?

Yes, you can differentiate a natural log with respect to any variable. The derivative of ln(x) with respect to y would be 1/(xln(y)).

Is the derivative of natural log(x) the same as the derivative of ln(x)?

Yes, natural log(x) and ln(x) are just different notations for the same function, so their derivatives are also the same.

How do you differentiate a natural log raised to a power?

To differentiate a natural log raised to a power, you can use the power rule and the derivative of ln(x). For example, if you have the function f(x) = ln(x)^3, you can rewrite it as f(x) = (ln(x))^3 and then use the power rule to get f'(x) = 3(ln(x))^2/x.

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