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OK, so why did I get such a charge out of finding f(x+h) in the last lesson?

Because it shows up in a formula that is super important in Calculus!

The Difference Quotient:

f ( x + h ) - f( x ) / h

So, you're going to be given a function like

f( x ) = x + 2

and you'll need to work out that big mess.  It's not that bad once you get the hang of it.

It's just three pieces:

1 )  f( x + h )Which we can now do!
2 )  -f( x )Easy - just remember to use ( ) !
3 )  / hPiece of cake!