## GRE Practice Question

Let k be the number of real solutions of the equation e$$^{x}$$ + x - 2 = 0 in the interval [0,1] and let n be the number of real solutions that are not in the interval.

By looking at the graph, I know it crosses the x axis; however, I don't remember or know how to do this problem.
 PhysOrg.com science news on PhysOrg.com >> City-life changes blackbird personalities, study shows>> Origins of 'The Hoff' crab revealed (w/ Video)>> Older males make better fathers: Mature male beetles work harder, care less about female infidelity
 Recognitions: Gold Member Homework Help Hint: If f(x) = ex + x - 2, look at f(0), f(1) and f '(x).
 I know what f(0) and f(1) are and f '(x) = e$$^{x}$$ + 1 How is that suppose to help?

Recognitions:
Gold Member
Homework Help

## GRE Practice Question

 Quote by Dustinsfl I know what f(0) and f(1) are and f '(x) = e$$^{x}$$ + 1 How is that suppose to help?
You mean "supposed" to help.

What does the fact that f(0) and f(1) have opposite signs tell you? What does having a positive derivative tell you? And, of course, I'm just assuming I know what your actual question was since your original post doesn't actually contain a question.
 At least this isn't an English forum. The question was in regards to multiple choices so I left that out because it wasn't needed.

Recognitions:
Gold Member
Homework Help
 Quote by Dustinsfl At least this isn't an English forum. The question was in regards to multiple choices so I left that out because it wasn't needed.
No extra charge for the English.

How are we supposed to know what the question was if you don't tell us? So, what was the question? And did the hints I gave you help you solve it?
 The question said which of the following. I didn't need someone to tell me which one it was so I left it out.

 Similar discussions for: GRE Practice Question Thread Forum Replies Introductory Physics Homework 2 Introductory Physics Homework 1 Engineering, Comp Sci, & Technology Homework 6 Engineering, Comp Sci, & Technology Homework 12 Biology, Chemistry & Other Homework 5