Area of a figure in x-y plane

Definite integral is introduced into mathematics trough problems of finding area of figures in plane. Definite integral of a function is area between that function and x-axis . Integrating the subtraction of two functions it is possible to find area bounded by curves of those two functions. We will show and illustrate this. It is required to define two functions in form of y=f(x) and limits x=a & x=b.

In general case area between two curves is found with:

povrsina figure

Function defining curve f:
f(x)=
Function defining curve g:
g(x)=

Y-axis parallels a i b which bound the figure: a = b =

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Napomena

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Aleksandar Grujić Đajić, Created with GeoGebra