### Home > APCALC > Chapter 7 > Lesson 7.2.4 > Problem7-93

7-93.

Brooke and Anne came across this integral: $y =\int dx$. Brooke says it cannot be evaluated because there is nothing to integrate. Anne says the answer is $y = x + C$. Who is correct and why?

An integral is the sum of infinitely many rectangles with infinitely small widths.
The base of each rectangle is represented as $dx$. The height is the integrand.
Though you cannot see the integrand, it is there.