All Leaving Cert Mathematics posts
  • avatar image

    Injective,Surjective and Bijective Functions HL Rachael5

    How do you prove that a function is bijective or not, injective or not and surjective or not?

    1. avatar image


      Injective are generally straight lines, where there's only one x value for every y value. Subjective is generally quadratic,Cuba etc where there more than one y value for every x, and visa versa! Bijective is a mixture of the 2. The function may start off as quadratic, but then shoot up exponentially - which makes it injective!

      V bad at explaining, hope that helps though!

    2. avatar image


      Share files from your computer