Jika ഽ f(x) dx = F(x) + C, berlaku
ₐഽb f(x) dx = F(b) – F(a)
Rumus-rumus integral tentu
⓵ ₐഽbk × f(x) dx = k × ₐഽb f(x) dx
⓶ ₐഽb(f(x) + g(x)) dx = ₐഽb f(x) dx + ₐഽbg(x) dx
⓷ ₐഽb(f(x) – g(x)) dx = ₐഽb f(x) dx – ₐഽbg(x) dx
⓸ ₐഽª f(x) dx = 0
⓹ ₐഽbf(x) dx = – ₐഽbf(x) dx
⓺ ₐഽ ͨ f(x) dx = ₐഽb f(x) dx + bഽ ͨ f(x) dx