Thursday, 8 March 2018

Evaluate the integral by interpreting it in terms of areas.

To
interpret the integral in terms of area , graph the integrand.

The integrand
is the function 

Graph the function in the interval (-1,2). Refer
the attached graph.

The bounded region forms two triangles, one triangle
below the x-axis and second triangle above the x-axis.

Area of triangle above
the x-axis 

Area of
triangle below the x-axis 


So,


 

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