[R] Plotting the PDF and the Cumulative Probability

[aledanda]

Hallo,

I have to fit my distribution with Beta-prime. I found the parameters now I
need to plot the Cumulative probability and the Probability density of my
fitted data. 
With gamma for exemple is easy:

PDF:

plot(x,dgamma(x, shape,rate))

Cumulative probability:

plot(x,pgamma(x, shape,rate))

How can I do with beta-prime?
Can I use the pbeta and dbeta defined for Beta distribution even though my
function is a Beta-prime?

Thanks a lot!

Ale
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