He also considered simultaneous **quadratic** equations.

Real life light sources experience **quadratic** falloff.

Differential calculus is used in solving **quadratic** equations.

Prime modulus Modulo 2, every integer is a **quadratic** residue.

Let A be the matrix of the **quadratic** form q in a given basis.

If the second derivative is not 0 at ? then the convergence is merely **quadratic**.

This is less than the 2 times as many which would be required for **quadratic** convergence.

The adjective “**quadratic**” can be dropped if the context makes it clear that it is implied.

The fact that this is a quartic invariant, rather than **quadratic**, has an important consequence.

No second derivative If there is no second derivative at the root, then convergence may fail to be **quadratic**.

For instance, a coherent state describes the oscillating motion of the particle in a **quadratic** potential well.

The probability itself is **quadratic** in the fields and consequently is also **quadratic** in the quantum state of the photon.

Note that the space of **quadratic** forms is a quotient of the space of bilinear forms, while symmetric forms are a subspace.