Maths

Maths

1. Functions

   • A function is something that takes an input, processes it and then gives an output
   • If it is outside the brackets then it effects the y co-ordinates
     • If it is inside the brackets then it effects the x co-ordinates
   • af(x)
     • This is a stretch by the scale factor of 'a'. It is in the y co-ordinates
   • f(ax)
     • This is a stretch by the scale factor of '1/a'. This is in the x co-ordinates
   • -f(x)
     • is a reflection in the x-axis
   • f(-x)
     • is a reflection in the y-axis