JEE Main 202227 JuneEvening Shift
- Exam
- JEE Main
- Year
- 2022
- Date
- 27 June
- Shift
- Evening Shift
- Subject
- Mathematics
- Chapter
- Complex Number
JEE Main 2022 · 27 June · Evening Shift · Mathematics · Complex Number
The number of points of intersection |z - (4 + 3i) | = 2| and |z| +...
The number of points of intersection \left|z -\left(4 + 3i\right)| = 2\right| and \left|z\right| + \left|z - 4\right| = 6, z \in C is
Options
- A
- B
- C
- D
Correct answer
B.
Step-by-step solution
Clearly, represents a circle with centre \left(4, 3\right)2 represents an ellipse with foci \left(0, 0\right) and \left(4, 0\right) and \left(- 1, 0\right) .
Observe that, lies on circle and \left|4 + i\right| + \left|4 + i - 4\right| = 1 + \sqrt{17} < 6z = \left(4 + i\right) lies inside the ellipse.
So, the graphs of the curves are as shown in figure.
It is clear from the above diagram, there exist two complex numbers which satisfy both the given curves.