Math Problem Statement

what are the components i and j of a vector with initial point -1;-3 and terminal point 2;1

Solution

The components ii and jj of a vector can be found by calculating the differences between the coordinates of the terminal point and the initial point. Let's denote the initial point as A(1,3)A(-1, -3) and the terminal point as B(2,1)B(2, 1).

To find the components of the vector, use the following formulas:

i=x2x1i = x_2 - x_1 j=y2y1j = y_2 - y_1

where:

  • x1x_1 and y1y_1 are the coordinates of the initial point A(1,3)A(-1, -3).
  • x2x_2 and y2y_2 are the coordinates of the terminal point B(2,1)B(2, 1).

Substituting the values: i=2(1)=2+1=3i = 2 - (-1) = 2 + 1 = 3 j=1(3)=1+3=4j = 1 - (-3) = 1 + 3 = 4

So, the vector components are: Vector=3i+4j\text{Vector} = 3i + 4j

Would you like a detailed explanation of how these calculations were performed or have any questions about the process?

Here are some related questions you might find useful:

  1. How do you find the magnitude of a vector given its components?
  2. What is the difference between vector notation and component form?
  3. How do you add two vectors using their components?
  4. How do you calculate the direction of a vector from its components?
  5. What are unit vectors and how are they calculated?

Tip: Remember that vector components can be seen as coordinates showing how far the vector moves in the xx (horizontal) and yy (vertical) directions.

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Math Problem Analysis

Mathematical Concepts

Vector Analysis
Coordinate Geometry

Formulas

Vector components formula: i = x2 - x1, j = y2 - y1

Theorems

Vector component calculation in 2D space

Suitable Grade Level

Grades 9-10