STATEMENT-1: The curve y = -frac{x^2}{2} + x | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Given the equation of the parabola: $y = -\frac{1}{2}x^2 + x + 1$.To find the axis of symmetry,we complete the square:$y = -\frac{1}{2}(x^2 - 2x)

Vedclass · Accepted Answer

$Statement-1$ is True,$Statement-2$ is True; $Statement-2$ is a correct explanation for $Statement-1$

Vedclass · Answer

(A) Given the equation of the parabola: $y = -\frac{1}{2}x^2 + x + 1$.To find the axis of symmetry,we complete the square:$y = -\frac{1}{2}(x^2 - 2x) + 1$$y = -\frac{1}{2}(x^2 - 2x + 1 - 1) + 1$$y = -\frac{1}{2}(x - 1)^2 + \frac{1}{2} + 1$$y - \frac{3}{2} = -\frac{1}{2}(x - 1)^2$.This is in the form $(x - h)^2 = 4a(y - k)$,which represents a parabola symmetric about the line $x = h$. Here,$h = 1$,so the curve is symmetric about $x = 1$.$Statement-1$ is True. $Statement-2$ is a standard property of a parabola,which is also True. Since the axis of symmetry for this parabola is indeed $x = 1$,$Statement-2$ correctly explains $Statement-1$.

$STATEMENT-1$: The curve $y = -\frac{x^2}{2} + x + 1$ is symmetric with respect to the line $x = 1$. Because
$STATEMENT-2$: $A$ parabola is symmetric about its axis.

Similar Questions

The coordinates of the ends of a focal chord of a parabola $y^2 = 4ax$ are $(x_1, y_1)$ and $(x_2, y_2)$. Then $x_1x_2 + y_1y_2$ has the value equal to

If $x-2y+k=0$ is a tangent to the parabola $y^2-4x-4y+8=0$,then the slope of the tangent drawn at $(1, k)$ on the given parabola is

The equation of the parabola with focus $(0,0)$ and directrix $x+y=4$ is

The parabola $y = x^2 + px + q$ cuts the straight line $y = 2x - 3$ at a point with abscissa $1$. If the distance between the vertex of the parabola and the $x$-axis is least,then:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

$STATEMENT-1$: The curve $y = -\frac{x^2}{2} + x + 1$ is symmetric with respect to the line $x = 1$. Because$STATEMENT-2$: $A$ parabola is symmetric about its axis.