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Mathematic ultimate formula sheet for quadratics

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This ultimate formula sheet provides a comprehensive overview of essential concepts, properties, and applications of quadratic functions. It is designed to assist high school students in mastering the fundamentals of quadratic equations while also serving as a valuable resource for university-level studies in mathematics, physics, engineering, and related fields. Key topics covered in this formula sheet include: Definition of Quadratic Functions: Understanding that a quadratic function is a polynomial function of degree two, often expressed in standard form. Characteristics of Quadratic Functions: Identifying key features such as the vertex, which represents the highest or lowest point of the parabola, the axis of symmetry that divides the parabola into two mirror images, and the y-intercept where the graph intersects the y-axis. Roots and X-Intercepts: Exploring how to find the roots or x-intercepts of a quadratic function, which indicate the points where the graph intersects the x-axis. This section emphasizes the importance of the discriminant in determining the nature of the roots. Forms of Quadratic Functions: Differentiating between standard form and vertex form of quadratic equations, including the implications of each form for graphing and analysis. Factoring Quadratics: Discussing the methods of factoring quadratic expressions and how this can simplify the process of finding roots. Applications of Quadratics: Highlighting various real-world applications of quadratic functions, including their role in modeling projectile motion, optimizing areas, and solving problems in different scientific contexts. This formula sheet serves as an essential guide for students and professionals alike, aiding in the understanding and application of quadratic equations in a variety of mathematical and practical scenarios.

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Institution
Secondary school
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11th Grade
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School year
3

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Uploaded on
October 17, 2024
Number of pages
2
Written in
2024/2025
Type
Exam (elaborations)
Contains
Only questions

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Content preview

MCR3U - Formula Sheet


1. Functions
• A function f is a relation that assigns to each element x in a set A exactly one element
y in a set B. This is denoted as f : A → B.
• Domain: The set of all possible input values (x-values).
• Range: The set of all possible output values (y-values).
• Vertical Line Test: If a vertical line intersects the graph of the relation at more than one
point, it is not a function.


2. Quadratic Functions
Standard Form
f (x) = ax2 + bx + c

Vertex Form
f (x) = a(x − h)2 + k (where (h, k) is the vertex)

Factored Form
f (x) = a(x − r1 )(x − r2 ) (where r1 and r2 are the roots)

Vertex
b
h=− , k = f (h)
2a

Axis of Symmetry
x=h

Minimum/Maximum Value
- If a > 0: Minimum value at k. - If a < 0: Maximum value at k.

Quadratic Formula
To find the roots of ax2 + bx + c = 0:

−b ± b2 − 4ac
x=
2a
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