Clean upgrade to Mavericks, re-installing iMovie?

[DoubleCheese]

I've just upgraded my mid 2009 MBP from Snow Leopard to Mavericks and I notice that some of the iLife Apps (IMovie, iPhoto, Garageband) that came with SL are not included in Mavericks.

Is there anyway of installing these from the SL discs that came with the laptop or do I have to purchase them? Can I re-install them from my SL Backups even?

Thanks.

 

[DoubleCheese]

Quick update. I made a Geious Bar appointment and 20 min later they'd installed all the Apps for me: Garage Band, iMovie, iPhoto etc. He was quite surprised that they didn't install with the original Mavericks install and he had to install from disk then update from Ap Store.

Thanks MasgicBoy, I had the discs and should have done this myself.