Lemma
MediumIntegrals
Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §5.1 The Idea of the Integral, #16 · Calculus · Integrals

Draw the … curve from … to … and put triangles below…

This problem is about the company earning per year.

Draw the curve from to and put triangles below to prove that the area under it is more than . Look left and right from the point where .

~8 minWritten answer · check your work with Lemma

Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §5.1 The Idea of the Integral, #16

Stuck? A gentle nudge

No hints for this one.

Something off?
Workspace
Your working

Check your full solution

Upload photos of your handwritten work or a PDF, and Lemma will read it and tell you whether it's right — and where it first goes wrong if not.

Sign in to have your work checked. It's free.