Discover the Symmetry in the Quadratic f(x) = 1/2x^2

Question

Given the expression of the quadratic function

Finding the symmetry point of the function

f(x)=12x2 f(x)=\frac{1}{2}x^2

Video Solution

Solution Steps

00:00 Find the point of symmetry in the function
00:03 We'll use the formula to calculate the vertex point
00:07 We'll look at the function's coefficients
00:10 The point of symmetry is the point where if you fold the parabola in half
00:13 The halves will be equal to each other
00:17 We'll substitute appropriate values according to the given data and solve for X at the point
00:26 This is the X value at the point of symmetry
00:30 Now we'll substitute this X value in the function to find the Y value at the point
00:45 This is the Y value at the point of symmetry
00:51 And this is the solution to the question

Step-by-Step Solution

To determine the symmetry (vertex) point of the quadratic function f(x)=12x2 f(x) = \frac{1}{2}x^2 , we will use the formula for the x-coordinate of the vertex (or axis of symmetry) for a general quadratic function f(x)=ax2+bx+c f(x) = ax^2 + bx + c , which is given by:

  • x=b2a x = -\frac{b}{2a}

In this problem, the coefficients are a=12 a = \frac{1}{2} , b=0 b = 0 , and c=0 c = 0 . By substituting these values into the vertex formula:

x=02×12=0 x = -\frac{0}{2 \times \frac{1}{2}} = 0

This tells us that the x-coordinate of the vertex is 0 0 . To find the y-coordinate of the vertex, we substitute x=0 x = 0 back into the function f(x)=12(x2) f(x) = \frac{1}{2}(x^2) :

f(0)=12(0)2=0 f(0) = \frac{1}{2}(0)^2 = 0

Thus, the vertex of the function, also its symmetry point, is at the coordinate (0,0) (0,0) .

Therefore, the symmetry point of the function f(x)=12x2 f(x) = \frac{1}{2}x^2 is (0,0) (0, 0) .

Answer

(0,0) (0,0)