Answer:
1. shown below
2.
Step-by-step explanation:
We say exists if the limit remains the same along every path.
Here, f is a function on two variables defined on a disk that contains the point (a,b).
1.
Along y-axis i.e., x = 0:
Along x-axis i.e., y = 0:
As the limit is not the same along different paths, so limit does not exist.
2.
Along the path x = y:
If a relation is a function, then any vertical line drawn will cut the graph at ONLY one place. All functions are relations. Functions are a set of ordered pairs such that no 2 pairs have the same x-value.
Answer:
6x = - 21
Step-by-step explanation:
Given
3x - 7 = 5x ( subtract 3x from both sides )
- 7 = 2x
Then
6x = 3 × 2x = 3 × - 7 = - 21