This is the area we need to find:

Area bounded by a parabola, the axes and `x=4`..

The area is given by:

`int_0^4(x^2+1)dx =[x^3/3+x]_0^4`

`=(4^3/3+4)-(0^3/3+0)`

`=76/3\ "units"^2`

`~~25.3\ "units"^2`

Get the Daily Math Tweet! IntMath on Twitter