Maths Dictionary · SS 3
Integral
Simple meaning
The result of integration: the reverse of differentiation. A definite integral gives the area under a curve.
Example
∫ 2x dx = x2 + C.
See it
From the Integration lesson. Try moving things around.
4 strips add up to ≈ 8.859
∫ (x2) dx = 13x3 + c, so F(x) = 13x3
∫03 (x2) dx = F(3) − F(0) = 9 − 0 = 9
Lower limit a0
Upper limit b3
Number of strips4