Differentiate to get the probability density function, and then we want the highest point on that curve, so you'll need to differentiate again and set the derivative of the PDF equal to 0 to find the x-value.
Differentiate to get the probability density function, and then we want the highest point on that curve, so you'll need to differentiate again and set the derivative of the PDF equal to 0 to find the x-value.
Ok so the pdf is 9x/10 -- 3x^2/10 so then you would have to differentiate that again to get 9/10 - 3x/20 and equal it to 0 ? Is that right