Đường thẳng \(\left(\right. d \left.\right) :\)

Parabol \(\left(\right. P \left.\right)\):

Vẽ đồ thị:

b) Tìm tọa độ giao điểm của \(\left(\right. P \left.\right)\) và \(\left(\right. d \left.\right)\) bằng phép tính.

Hoành độ giao điểm của \(\left(\right. P \left.\right)\) và \(\left(\right. d \left.\right)\) là nghiệm của phương trình

\(\frac{1}{4} x^{2} = - \frac{1}{2} x + 2\)

\(x^{2} + 2 x - 8 = 0\)

\(\Delta^{'} = 1^{2} - \left(\right. - 8 \left.\right) = 9 > 0\)

Do \(\Delta^{'} > 0\) nên phương trình đã cho có hai nghiệm phân biệt là \(x = - 4\) và \(x = 2\)

+ Với \(x = - 4\) thì \(y = 4\)

+ Với \(x = 2\) thì \(y = 1\).

Vậy tọa độ giao điểm của \(\left(\right. P \left.\right)\) và \(\left(\right. d \left.\right)\) là \(\left(\right. - 4 ; 4 \left.\right)\) và \(\left(\right. 2 ; 1 \left.\right)\).

.

There are many things we should do to manage our time effectively. Firstly, making a plan or schedule for things you need to do, including appointments, projects, homework and tests. You can plan your work ahead by using a calendar, a diary, or a mobile app. It helps you remember what you need to accomplish and when you should do it. Secondly, giving priority to the most important task. You should decide which is the most urgent and important task so that you can concentrate on it first. By doing this, you may not be at a loss to deal with too much work at the same time. Finally, building an effective daily routine. An effective routine can help you accomplish the things you need to do. The more you follow a daily routine, the less you will worry or get stressed.

I love city life.First,cities offer many job opportunities, which makes it easier to find word. second,there are lots of entertainment options like theaters , restaurants , and shopping centers . Third, public transportation is convenient so it is easy to get around without a car. In conclusion, living in a city is exciting and full of opportunities .