Pareto Distribution CDF to PDF

I'm having trouble differentiating the CDF of the pareto distribution to obtain the PDF. Can somebody please just go through this in steps please?

Many thanks in advance

 

let me know if want more

explanation


you should probably worry about integrating it rather than differentiating it , since that would be a more common and more difficult problem.

 

Thanks for that although why don't we differentiate the top part and the bottom part? It appears as though you're just differentiating the bottom bit?

UPDATE!

Sorry I'm being a bit foolish, of course we're differentiating with respect to X, so only the bottom bit needs to be differentiated!!