
Quadratic equation standard form: ax² + bx + c = 0
Image: Lucas Vieira, Public domain, via Wikimedia Commons
Quadratic equation standard form: ax² + bx + c = 0
A quadratic equation is expressed in the standard form ax² + bx + c = 0, where 'a', 'b', and 'c' are coefficients and 'a' cannot be zero. This form is essential for solving quadratic equations using various methods. The coefficients 'a', 'b', and 'c' represent the quadratic coefficient, the linear coefficient, and the constant term, respectively.
Example
Consider the quadratic equation 2x² + 3x + 1 = 0. Here, 'a' is 2, 'b' is 3, and 'c' is 1. This equation can be solved using methods like factoring, completing the square, or the quadratic formula.
Understanding the standard form of a quadratic equation is crucial for applying different solving techniques and finding the roots of the equation.
Normalization (machine learning)
L2 normalization equation: x_i' = x_i / ||x||_2
Rotation matrix
Determinant of a 2x2 matrix: ad - bc
Matrix norm
L1 norm of a vector is the sum of absolute values of its components
Euler's identity
Euler's identity: e^(iπ) + 1 = 0
BLEU
BLEU = exp(Σ(w_t * log(p_t)))
Chain rule
Chain rule formula: h'(x) = z'(y(x)) * y'(x)
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