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Question #40511
The Question
Let be the distinct complex roots of the equation . Let be a transformation matrix, where . For each , let be the complex number defined by the matrix multiplication Consider the vectors in . Given that the vectors are linearly dependent and the points are not collinear, let be the area of the triangle formed by in the complex plane. Find the value of .
Options
- A.
675
- B.
225
- C.
135
- D.
507
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Monster
Ultra-high difficulty questions designed to test your limit, stamina, and deep conceptual understanding.
Concepts Behind This Question
Geometry of Complex Inequalities|Linear Independence vs Dependence|Orthogonal Matrix Conditions
Why This Question Is Tricky
Common Mistakes
This question tests the geometric interpretation of linear dependence and matrix transformations.
The primary trap is attempting a brute-force expansion of the determinant of , which leads to an intractable trigonometric polynomial.
The elegant solution requires recognizing that linear dependence of implies the transformed points lie on an axis-aligned ellipse.
This directly translates to the condition that the transformation matrix must have orthogonal rows (i.e., is diagonal).
This beautifully connects linear algebra with coordinate geometry, forcing students to abandon pure algebra for geometric insight.
Quick Facts About This Question
Question Information
| Subject | Mathematics |
| Chapter | Complex Numbers and Quadratic Equations - Class 11 |
| Concept | Geometry of Complex Inequalities |
| Difficulty | 8 |
| Cognitive Load | 7 |
| Target Solve Time | 160 sec |
| Access | Free |