Question

f(x)=(x^4)*exp(-x)+(x^2)*cos(2*x)+log(4)
How do u find the area under the graph using upper and lower estimate?

Answer 1

Integrate.

Answer 2

It looks like the area is infinite

Answer 3

between 0 and 10

Answer 4

but i need to separate it into pieces and find the area of each rectangle, then add them all together. I know the concept but not realy sure how to apply it.