Joint Entrance Examination/AIEEE 2009/Q014 calculus

From Wikiversity
Jump to navigation Jump to search


Welcome to the Highschool Help Forum!

The forum is currently in "Beta" stage of development. You can ask questions and answer/discuss them. The basic functionalities are present. What's required is a more aesthetic look to the Static pages and a more user friendly setup. This will happen over the time gradually as we start creating some content.

The site has a lot of tools, like posting mathematical calculations, images and diagrams; categorizing questions and so on. Having them here is NO GOOD unless you know how to use them. I am thoroughly against compiling a list of these features and then writing about them. As soon as you do not understand how to do something or use a certain feature, report that on "How To"s Section of the forum. Your queries will be answered there.

If you have any ideas/discussion regarding the site/comments, please go to Discussions regarding Highschool Help Forum

Lastly, thanks for joining in the site's development process! It matters!

Test Text


Original Question by 164.100.170.4

Here's the question...

Given P(x)=x4+ax3+bx2+cx+d such that x=0 is the only real root of P'(x)=0 . If P(-1)<P(1) , then in the interval [-1,1],

  • (1)P(-1) neither is the minimum nor P(1) is the maximum of P
  • (2) P(-1) is the minimum and P(1) is the maximum of P
  • (3) P(-1) is not minimum but P(1) is the maximum of P
  • (4) P(-1) is the minimum but P(1) is not the maximum of P

Posted by 164.100.170.4 05:42, 27 September 2009 (UTC)

Post a reply![1]



What's Up?

Latest discussions on the forum

Calculus-Help

  1. Joint Entrance Examination/AIEEE 2009/Q014 calculus
  2. User:Thewinster/HHF/Calculus-Preload


Mathematics-Help

  1. User:Thewinster/Sandbox
  2. User:Thewinster/Sandbox/Forum-Watch
  3. Category:Vectors-3D-Geometry-Help
  4. Category:Calculus-Help
  5. Category:Misc-Math-Topics-Help



Browse All Available Categories

Physics: Introductory PhysicsMechanicsHeatWaves and OscillationsElectricity And MagnetismOpticsModern Physics
Mathematics: AlgebraTrigonometryCo-Ordinate (Analytical) GeometryCalculusVectors And 3D GeometryMiscellaneous Topics
Chemistry: General Chemistry and Physical ChemistryOrganic ChemistryInorganic Chemistry
Biology: General BiologyAnatomyPhysiologyBotanyZoology
a a


Reply to the thread, posted by 164.100.170.4

Thread post


Additional notes

ans:[3] P(x)=x4+ax3+bx2+cx+d Now P'(0)= 0 => c=0. =>P(x)= P(x)=x4+ax3+bx2+d clearly we see that P(1) is maximum but P(-1) is not minimum.

Clearly is maximum but is not minimum. Correct choice: (3)

These comments, along with the notes on the left, were contributed by 164.100.170.4 05:48, 27 September 2009 (UTC)