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- Symbol:∫
- Name:Integral
- Unicode:
U+222B - HTML Entity:
∫ , ∫ - LaTeX:
\int
The Integral Symbol (∫) in Calculus
The Integral symbol (∫) is a mathematical notation used in calculus to denote integration—the mathematical operation of accumulation, summing infinitesimal parts, and finding the area under a curve.
It was introduced by Gottfried Wilhelm Leibniz, who designed the symbol as an elongated 'S' representing 'summa' (Latin for sum).
Integrals can be definite (having upper and lower limits of integration) or indefinite (representing the general antiderivative of a function plus a constant $C$).
How to Use and Copy the Integral Sign Online
Copy the Integral symbol instantly by clicking the copy button on the display card at the top. You can also write integral or the LaTeX command \int, or draw the tall elongated 'S' shape on the canvas to find it.
Fundamental Theorem of Calculus
The integral symbol is central to the connection between derivatives and integrals:
- Definite Integral: $\int_a^b f(x) dx = F(b) - F(a)$ where $F'(x) = f(x)$.
- Indefinite Integral: $\int f(x) dx = F(x) + C$.
- Area: $A = \int_a^b y dx$ represents the physical area between the curve and the x-axis.
Explore Other Keyboard Tools
To type more mathematical symbols, constants, and operators, check out our collections: Integration symbol typer & keyboard, Physics constants keyboard, Chemistry formulas keyboard, Greek letters keyboard, Spanish accents keyboard, German QWERTZ keyboard, and French accents keyboard.
Frequently Asked Questions (FAQ)
What is the meaning of the Integral symbol (∫)?
The integral symbol (∫) represents integration in calculus, signifying the calculation of the area under a curve, accumulation of quantities, or antiderivatives.
How do I type the Integral symbol on a computer?
Type "\int" in Word or LaTeX. On Windows, use Alt + 8747. On our tool, you can copy it or draw it.
What is the LaTeX code for Integral?
The LaTeX command for an integral is "\int".
What is the Unicode and HTML entity for Integral?
The Unicode is U+222B, and the HTML entity is ∫ or ∫.