differential calculus time rates

Rdl Randell Charles Malit's picture
Submitted by Rdl Randell Cha... on December 18, 2015 - 11:32pm

A boatman is at which is 4.51cm from the nearest point B on A straight shore. He wishes to reach in Minimum time a point C. Situated on the shore 9km from B. How far from C should He land if He can now at the rate of 6kph and walk at the rate of 7.5kph.

fitzmerl duron's picture

Submitted by fitzmerl duron on July 26, 2018 - 12:07am.

I'm lazy...you can find the answer in this link:

A boatman is at which is 4.5 kilometers

Add new comment

More information about text formats

Deafult Input

  • Allowed HTML tags: <img> <em> <strong> <cite> <code> <ul> <ol> <li> <dl> <dt> <dd> <sub> <sup> <blockquote> <ins> <del> <div>
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
  • Mathematics inside the configured delimiters is rendered by MathJax. The default math delimiters are $$...$$ and \[...\] for displayed mathematics, and $...$ and \(...\) for in-line mathematics.

Plain text

  • No HTML tags allowed.
  • Lines and paragraphs break automatically.