I am being asked to code this in matlab and display figures and am having trouble figuring out how to do joint pdf. If you could atleast provide the equations needed or possibly a graph example of what it should look like, it would be appreciated.
Plot the joint pdf of two independent variables X and Y.
1) If both X and Y have standard norm distributions, X ~ N(0,1), Y ~ N(0,1).
2) If both X and Y have exponential distributions, X ~ Exp(0.5), Y ~ Exp(0.5).
3) If X has a standard norm distribution, X ~ N(0,1), and Y has an exponential distribution, Y ~ Exp(0.5).