1. Determine three positive numbers with the sum result 100 and the result of the multiplication Maximum (note : for find out the solution use chain rule for differentiation partial derivatives, criticl point, extrem point and so on) 2 4 affyzfez" dydx o o .3. Use The Green Theorem to calculate the following line integrals 2. Calculate: 9%.(vx- y)dx + (x+ y) dy Where C is the boundary of the area bounded by a circle centered on a point (0,0) and radius 2