Leibniz's Theorem
where the coefficients 
are binomial coefficients.
For example, to find h(8)(x), when h(x) = x2 sin x, let f(x) = x2 and g(x) = sin x. Then f′(x) = 2x and f″(x) = 2, with higher derivatives being zero; and g(8)(x) = sinx, g(7)(x) = −cosx and g(6) (x) = −sinx. So
- inertial mass
- inertia matrix
- inextensible string
- inf
- infeasible
- inference
- infimum
- infinite
- infinite product
- infinite sequence
- infinite series
- infinite set
- infinitesimal
- infinity
- inflection
- information
- information theory
- inhomogeneous
- initial conditions
- initialize
- initial line
- initial value
- initial value problem
- injection
- inner product