# Calculus Symbols

## Calculus Symbols

Calculus and analysis math symbols and definitions.

## Calculus & analysis math symbols table

Symbol Symbol Name Meaning / definition Example limit limit value of a function
ε epsilon represents a very small number, near zero ε 0
e e constant / Euler's number e = 2.718281828... e = lim (1+1/x)x , x→∞
y ' derivative derivative - Lagrange's notation (3x3)' = 9x2
y '' second derivative derivative of derivative (3x3)'' = 18x
y(n) nth derivative n times derivation (3x3)(3) = 18 derivative derivative - Leibniz's notation d(3x3)/dx = 9x2 second derivative derivative of derivative d2(3x3)/dx2 = 18x nth derivative n times derivation time derivative derivative by time - Newton's notation time second derivative derivative of derivative
Dx y derivative derivative - Euler's notation
Dx2y second derivative derivative of derivative partial derivative   ∂(x2+y2)/∂x = 2x
integral opposite to derivation
double integral integration of function of 2 variables
triple integral integration of function of 3 variables
closed contour / line integral
closed surface integral
closed volume integral
[a,b] closed interval [a,b] = {x | a x b}
(a,b) open interval (a,b) = {x | a < x < b}
i imaginary unit i ≡ √-1 z = 3 + 2i
z* complex conjugate z = a+biz*=a-bi z* = 3 + 2i
z complex conjugate z = a+biz =a-bi z = 3 + 2i
nabla / del gradient / divergence operator f (x,y,z) vector unit vector
x * y convolution y(t) = x(t) * h(t) Laplace transform F(s) = {f (t)} Fourier transform X(ω) = {f (t)}
δ delta function
lemniscate infinity symbol