Derivative of Natural Log: How to Solve Number 3 on Homework Assignment

Click For Summary
To solve the derivative of the natural log in question number 3, it's essential to apply the correct log properties and the chain rule. The original attempt was hindered by a misunderstanding of the notation for cube roots, which should be expressed as x raised to the power of one-third, not as the cube of the square root. A clearer presentation of the work is necessary for effective assistance, as messy or disorganized submissions can lead to confusion. It is advised to use clean paper and logical sequencing in future submissions. Proper algebra skills are crucial for arriving at the correct answer.
thegoosegirl42
Messages
22
Reaction score
1

Homework Statement


I posted a picture of it and my attempt it is number 3

Homework Equations

The Attempt at a Solution


I tried using log properties and I am not sure what went wrong and how to arrive at the correct answer.

Mod note: Messy, disorganized image deleted.
 
Last edited by a moderator:
Physics news on Phys.org
log derivative and chain rule should get you there.
 
You need to brush up on your algebra. ##\sqrt[3]{x}## doesn't mean ##(\sqrt{x})^3##; it means ##x^{1/3}##. Try again.
 
If you must post your attempt at a solution in handwritten form, at least use a clean sheet of paper and present your work in some logical sequence so that others can follow it. o_O
 
@thegoosegirl42,
The image you posted was so bad that I deleted it. Please post the problem you want help on (not an image), together with your work.
 
Question: A clock's minute hand has length 4 and its hour hand has length 3. What is the distance between the tips at the moment when it is increasing most rapidly?(Putnam Exam Question) Answer: Making assumption that both the hands moves at constant angular velocities, the answer is ## \sqrt{7} .## But don't you think this assumption is somewhat doubtful and wrong?

Similar threads

  • · Replies 4 ·
Replies
4
Views
2K
Replies
8
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
Replies
2
Views
2K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 2 ·
Replies
2
Views
4K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 7 ·
Replies
7
Views
1K
  • · Replies 10 ·
Replies
10
Views
2K