\ddot{a} - LaTeX Symbol

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\overset{a}{¨}

\ddot{a}

The symbol \ddot{a} is used to denote the second derivative of a with respect to time, often used in physics to represent acceleration. It is an example of an accent in LaTeX, where two dots are placed above a character.

Examples

\overset{x}{¨} = \frac{d ^{2} x}{d t ^{2}}

Represents the second derivative of x with respect to time, indicating acceleration.

\ddot{x} = \frac{d^2x}{dt^2}

\ddot{θ} = \frac{d ^{2} θ}{d t ^{2}}

Represents angular acceleration, the second derivative of angle theta with respect to time.

\ddot{\theta} = \frac{d^2\theta}{dt^2}

\overset{y}{¨} = \frac{d ^{2} y}{d t ^{2}}

Represents the second derivative of y with respect to time, indicating acceleration in the y-direction.

\ddot{y} = \frac{d^2y}{dt^2}