Pre Calculus

Determine an approximate solution to the inequality 2^x=x^2.

  1. 👍 0
  2. 👎 0
  3. 👁 51
asked by Hanu
  1. You typed an equation, not an inequality

    If you meant 2^x > x^2 , follow my method in your previous post, or

    let's look at 2^x = x^2
    obviously one trivial solution is x = 2
    what about x = 4 ?
    LS = 2^4 = 16
    RS = 4^2 = 16 , yup!

    the graph shows another solution to the left of the origin.
    Wolfram shows this:
    http://www.wolframalpha.com/input/?i=+2%5Ex+%3D+x%5E2

    x = -.766665

    so x = -.766665 , 2, 4

    1. 👍 0
    2. 👎 0
    posted by Reiny

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    Can anyone help me with dq i week 2Post your response to the following: How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation? If you replace the

    asked by Norma on July 29, 2010
  2. adult education

    How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation? o If you replace the equal sign of an equation with an inequality sign, is there ever a

    asked by cristale on November 28, 2009
  3. Algebra

    How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an euation? If you replace the equal sign of an equation with an inequality sign, is there ever a time

    asked by Kellie on September 28, 2009
  4. Algebra

    How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation? If you replace the equal sign of an equation and put an inequality sign in its place, is

    asked by will on April 15, 2008
  5. math 116

    How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation? If you replace the equal sign of an equation and put an inequality sign in its place, is

    asked by Adrian on March 24, 2010
  6. Algebra

    How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation? If you replace the equal sign of an equation and put an inequality sign in its place, is

    asked by Jacqueline on April 27, 2010
  7. math 116

    How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation? If you replace the equal sign of an equation and put an inequality sign in its place, is

    asked by Adrian on March 24, 2010
  8. Algebra

    How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation? If you replace the equal sign of an equation and put an inequality sign in its place, is

    asked by Lucille on September 16, 2008
  9. Math (Algebra)

    How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation? If you replace the equal sign of an equation with an inequality sign, is there ever a time

    asked by Kaylee on October 1, 2009
  10. m116

    How do you know if a value is a solution for an inequality?How is this different from determining if a value is a solution to an equation? If you replace the equal sign of an equation with an inequality sign, is there ever a time

    asked by Shelly on May 20, 2008

More Similar Questions