planetqhe and the IB Random Behaviour Experimental vs Theoretical Compound Events I Compound Events II Expectations and Distributions Distributions and Hypotheses Probability in the real world Home Contact
Essential Questions Chevalier de Mere 2 Dice World Cup Finals Birthday problem 2 Monty Hall

Random Quadratics
Read about this problem 

and many others by clicking on

  "Fifty Challenging Problems in Probability"

available at amazon.co.uk

QHE Question:

What is the probability that the quadratic equation

has real roots? 

A B C D E
0 < 0.5 0.5 >0.5 1


(Note that in the simulation only integer values are admitted for b and c. If you allow them to take real values, then you can use calculus to solve this one.)

 

 Read about this problem 

and many others by clicking on

  "Fifty Challenging Problems in Probability"

available at amazon.com 

Random Quadratics Activity

This activity is a Microsoft Excel document of 284K .

Don't have Microsoft Excel installed on your computer? Download a free Excel viewer here.