Question

How do you find the area of the region under the curve `y=4x^-2` from x=1, to `x=oo`?

Answer 1

Area= `4` sq. units

Explanation:

Area= `int_1^oo 4x^-2`

Area= `[-4x^-1]_1^oo`

Area= `0-(-4)`

Area= `4` sq. units