Equations · equation
Fundamental Theorem of Calculus
Calculus · 1670
- Equation
- ∫_a^b f′(x) dx = f(b) − f(a)
- Field
- Calculus
- Symbols
- f′ a rate of change · ∫_a^b … dx the total accumulated between a and b · f(b) − f(a) the net change
- Year
- 1670
Significance
Adding up a rate of change over an interval gives the total change — so integration undoes differentiation, and the area under a velocity graph is the distance travelled. Barrow had the geometric version in 1670; his student Newton and, separately, Leibniz turned it into a method. Kinematics, the rocket equation and every 'work is the integral of force' rest on it.
Open on the Equations shelf — the interactive card, the filters, and everything alongside it.