IDZ 6.4 - Option 10. Decisions Ryabushko AP

1. Solve the following tasks:
1.10 On the ship, which is anchored at 9 km from the coast, you need to send a messenger to the camp, located 15 kilometers from the nearest point of the shore to the ship. Speed Messenger while driving distance - 5 km / h, and on the boat - 4 km / h. In what place he should hit the beach to get to the camp as soon as possible?

2. Carry out a full investigation of these functions and build their schedules.
2.10 y = x3 / (x2-x + 1)

3. Carry out a full investigation of these functions and build their schedules.
3.10 y = xex

4. Find the minimum and maximum values of the function y = f (x) on the interval [a; b]
4.10 y = (x3 + 4) / x2, [1; 2]