The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » sci.math.* » sci.math

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: Help Needed in math
Replies: 25   Last Post: May 2, 2014 6:01 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]

Posts: 12,067
Registered: 7/15/05
Re: Help Needed in math
Posted: Apr 28, 2014 4:46 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

punisher wrote:
>Can someone help me solve this
>Find the largest values of the integer a for which ax^2-5x-3 is
>negative for all values of x.

Is it homework?

I'll give a few hints:

(1) Can the required value of a be positive? Can it be zero?

(2) Can you find the vertex coordinates in terms of a?

(3) As an alternative to (2), find the discriminant in
terms of a. How can it help?


Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.