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CUET · MATHS · PYQ PAPER 2025

The equation of the tangent line to the curve \(y=x^2-2 x+5\) which is Oparallel to the line 4x - y + 1 = 0 is:

  1. A 4x - y - 1 = 0
  2. B 4x - y - 4 = 0
  3. C x + 4y - 4 = 0
  4. D x + 4y - 1 = 0
Verified Solution

Answer & Solution

Correct Answer

(B) 4x - y - 4 = 0

Step-by-step Solution

Detailed explanation

\(m_{line} = 4\) \(\frac{dy}{dx} = 2x - 2\) \(2x - 2 = 4 \implies 2x = 6 \implies x = 3\) \(y = (3)^2 - 2(3) + 5 = 9 - 6 + 5 = 8\) \(y - 8 = 4(x - 3)\) \(y - 8 = 4x - 12\) \(4x - y - 4 = 0\)