Ask questions and get helpful answers.
Ask a New Question

Graph the function f(x)=x+4/x

Graph the secant line that passes through the points (1,5) and (8,8.5) on the same set of axes

Find the number c that satisfies the conclusion of the Mean Value Theorem for f on [1,8]


Notice that if you graph the tangent line to the point (c,f(c)) it is parallel to the secant line.

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩

1 answer

  1. so, did you do that, and notice the parallel lines? That means that for some c between 1 and 8,

    f'(x) = (8.5-5)/(8-1)

    So, you need to find c where

    -4/c^2 = 1/2

    Eh? Not possible. Looks like (8,8.5) is not on the curve. Better fix you point and redo the steps.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

Answer this Question

Related Questions

Still need help?

You can ask a new question or browse existing questions.