1. D

    Hello from Andrew

    Thanks for allowing me to join you. I have my first question...could someone explain when to use derivatives and easy to understand language please? Cheers
  2. Math Help

    Question from Andrew

    This question was submitted to via email. Can any one figure this out. Given: x^2 - mx - nx = p^2 Prove that roots are real for all real values of m,n and p ii)determine the conditions which m,n and p nhave to meet for the equation to have equal roots.