This is a problem I did in one of my test in high school, I completely forgot how to do this, there were two questions stated a) and b).
My attempt will be to try and find the function of the graph and integrate, then I would try to differentiate it and set it to 0, and try to find that value of of x? I am not quite sure how to fo part a), I think I can try to do part b) which is just integrate on that interval of the function.
Could anyone help me? Thank you