Be warned! This question is difficult too, but solving it would mean that you've mastered this chapter, so do give it a go!
Obtain the elastic curve expression for the beam using the Macaulay function. Then calculate the deflection at the free-end of the cantilevered beam.
Congratulations! You've completed all the questions in this topic. That's it for Solid Mechanics I! You can try exploring some of the more advanced topics in Solid Mechanics II.