Question
1 a. What does the equation x = 4 represent in R 2 ? What does it represent in R 3 ? b. What does
1
a. What does the equation x = 4 represent in R2? What does it represent in R3?
b. What does the equation y = 3 represent in R3? What does z = 5 represent? What does the pair of equations {y = 3, z = 5}represent? In other words, describe the set of points (x, y, z) such that we have both y = 3 and z = 5. Illustrate with a sketch.
c. What does the set of three equations {x = 4, y = 5, z = 3}represent in R3? In other words, describe the set of points (x, y, z) such that x = 4 and y = 5 and z = 3.
d. Points are considered to be "0-dimensional", lines are "1-dimensional", planes are "2-dimensional", and R3is "3-dimensional". What do you notice about the relationship between the number of equations and the dimension of the shape they represent in R3? Do the same thing for R2
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