[R] Plotting pdf of function

[Beetle]

Hi Guys,
I'm a numbie to R.
I searched the forum for plotting pdf's of functions but couldn't find one
that explained my question.

I have been asked to plot the pdf  fX(x) = 1/pi(1+x^2). -infinity < x <
infinity.

I would be greatfull if someone might point me to a webpage that might give
me a hand.

Kindest regards
Beetle
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