如何绘制常数函数概率密度函数

Question

I have a function like this:

f(X) = 1/b-a  where a = 5% and b =15% and X = rate of return.

I would like to plot the probability density function of this.

What I have tried:

I know I need to use dname() for density or probability function but I do not know the name to pass to this.

Answer 1

罗马建议，以下内容如何：

curve(dunif(x, min = 5, max = 15),0,20,n=101,xlab='Expected Return',ylab='Density')