For the function f(x) = 2x^2 - 8x + 10, find the minimum value. (2022)

Practice Questions

Q1
For the function f(x) = 2x^2 - 8x + 10, find the minimum value. (2022)
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Questions & Step-by-Step Solutions

For the function f(x) = 2x^2 - 8x + 10, find the minimum value. (2022)
  • Step 1: Identify the function we are working with, which is f(x) = 2x^2 - 8x + 10.
  • Step 2: Recognize that this is a quadratic function in the form of ax^2 + bx + c, where a = 2, b = -8, and c = 10.
  • Step 3: To find the minimum value of a quadratic function, we can use the formula for the x-coordinate of the vertex, which is x = -b / (2a).
  • Step 4: Plug in the values of a and b into the formula: x = -(-8) / (2 * 2) = 8 / 4 = 2.
  • Step 5: Now that we have x = 2, we need to find the minimum value of the function by substituting x back into the function: f(2) = 2(2^2) - 8(2) + 10.
  • Step 6: Calculate f(2): f(2) = 2(4) - 16 + 10 = 8 - 16 + 10 = 2.
  • Step 7: Therefore, the minimum value of the function f(x) is 2.
  • Quadratic Functions – Understanding the properties of quadratic functions, including how to find their minimum or maximum values using the vertex formula.
  • Vertex of a Parabola – Identifying the vertex of a parabola represented by a quadratic function, which gives the minimum or maximum value.
  • Calculating Function Values – Evaluating the function at specific points to find the minimum value.
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