The point on the curve $y = (x-2)^2$ at which the tangent is parallel to the chord joining the points (2, 0) and (4, 4) is: |
(3, -1) (2, 3) (2, -3) (3, 1) |
(3, 1) |
The correct answer is Option (4) → (3, 1) Given curve: $y = (x-2)^2$ Chord joining points (2,0) and (4,4): Slope of chord: $m = \frac{4 - 0}{4 - 2} = \frac{4}{2} = 2$ Derivative of $y$: $y' = \frac{d}{dx} (x-2)^2 = 2(x-2)$ Set slope of tangent = slope of chord: $2(x-2) = 2 \Rightarrow x-2 = 1 \Rightarrow x = 3$ Corresponding $y$ value: $y = (3-2)^2 = 1$ Answer: (3, 1) |