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AP EAMCET · Maths · Vector Algebra

Let \(\mathbf{u}=\hat{\mathbf{i}}-2 \hat{\mathbf{j}}\) and \(\mathbf{v}=-3 \hat{\mathbf{i}}+5 \hat{\mathbf{j}}\). Consider three points \(P, Q\) and \(R\) having position vectors \(\frac{-1}{7} \hat{\mathbf{i}}, \frac{-1}{4} \hat{\mathbf{j}}\) and \(-2 \hat{\mathbf{i}}+3 \hat{\mathbf{j}}\) respectively.
Among these, the points in the line segment passing through \(\mathbf{u}\) and \(\mathbf{v}\) are

  1. A Only \(P\) and \(Q\)
  2. B Only \(P\) and \(R\)
  3. C Only \(Q\) and \(R\)
  4. D All \(P, Q\) and \(R\)
Verified Solution

Answer & Solution

Correct Answer

(A) Only \(P\) and \(Q\)

Step-by-step Solution

Detailed explanation

Given vectors \(\mathbf{u}=\hat{\mathbf{i}}-2 \hat{\mathbf{j}}\) and \(\mathbf{v}=-3 \hat{\mathbf{i}}+5 \hat{\mathbf{j}}\). Now, equation of line segment passes through the points \(\mathbf{u}\) and \(\mathbf{v}\) is \(\frac{x-1}{4}=\frac{y+2}{-7}\) ...(i) Now, the point vectors…