Finding the least possible sum of a product.

  • Thread starter Thread starter Physics345
  • Start date Start date
  • Tags Tags
    Product Sum
Click For Summary
The discussion focuses on finding two positive numbers that multiply to 100 while minimizing their sum. Participants express confusion over the wording of the problem but agree on the objective. One user shares their approach and acknowledges the need for clearer organization in their calculations. The conversation highlights the importance of presenting mathematical work in a structured manner for better understanding. Overall, the thread emphasizes collaboration in solving mathematical problems effectively.
Physics345
Messages
250
Reaction score
23

Homework Statement


The product of two positive numbers is 100. What numbers will produce the least possible sum? Confirm that the sum is in fact a minimum.

Homework Equations

The Attempt at a Solution


For this question here I feel like the wording is a bit confusing, I tried my best please let me know if I'm on the right track and if there is any mistakes we can work through.
Anyways here's my train of thought:
From my understanding it is asking me to find two positive numbers that have a product of 100. Basically two numbers when multiplied together equal 100, and the two numbers need to have the lowest possible sum when added together.
Here's my work:
1qeYxiY.png
 

Attachments

  • 1qeYxiY.png
    1qeYxiY.png
    22.4 KB · Views: 1,742
Physics news on Phys.org
What you posted is a bit hard to follow (it doesn't appear to be first column followed by second column, but rather some back and forth), but overall it appears correct.
 
  • Like
Likes Physics345
DrClaude said:
What you posted is a bit hard to follow (it doesn't appear to be first column followed by second column, but rather some back and forth), but overall it appears correct.
That is true, I'll be sure to put the math in order from now on. I wrote that when I first woke up. I wasn't thinking straight, it looks like I'm still doing math in my dreams, which is also extremely unorganized/confusing but correct.
I appreciate your help kind sir.
 
Thread moved to Calc & Beyond section.
 
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 12 ·
Replies
12
Views
3K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 5 ·
Replies
5
Views
1K
  • · Replies 8 ·
Replies
8
Views
4K
Replies
10
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 5 ·
Replies
5
Views
4K
  • · Replies 1 ·
Replies
1
Views
1K
Replies
7
Views
2K