My brother wants to be the male lead
Most of Zhou Zhi's sisters had already gotten engaged in recent years. Seeing that Zhou Zhi was approaching her twenties and that she was the only one who had not received any news, the group of sisters also started to worry. Zhao Fou even wanted to matchmake her with her fourth brother. However, Zhao Silang did not agree. Zhao Silang was adamant about it. Zhao Silang was so against it that even Zhou Zhi had to ask him," Prince Zhao, getting married is not your life. What are you afraid of?"
At this moment, the Zhou family's eldest son smiled without saying a word. There was a hidden knife in his eyes, and it seemed like he wanted Zhao family's fourth son's life.
[PS: The dynasty is empty, don't investigate; Fake brother and sister, age difference of six years, little sweet text]
Old Brother Fang
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Vector Addition and Subtraction Suppose a particle undergoes a displacement followed by a second displacement . The final result is the same as if the particle had started at the same initial point and undergone a single displacement (Fig. 1.11a). We call displacement the vector sum, or resultant, of displacements and We express this relationship symbolically as (1.2) The boldface plus sign emphasizes that adding two vector quantities requires a geometrical process and is not the same operation as adding two scalar quantities such as In vector addition we usually place the tail of the second vector at the head, or tip, of the first vector (Fig. 1.11a). If we make the displacements and in reverse order, with first and second, the result is the same (Fig. 1.11b). Thus (1.3) This shows that the order of terms in a vector sum doesn’t matter. In other words, vector addition obeys the commutative law. Figure 1.11c shows another way to represent the vector sum: If vectors and are both drawn with their tails at the same point, vector is the diagonal of a parallelogram constructed with and as two adjacent sides. CAUTION Magnitudes in vector addition It’s a common error to conclude that if