Lemma
MediumIntegrals
Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §5.5 The Definite Integral, #24 · Calculus · Integrals

The difference … in 21 is the area … of the far…

Repeat 19 and 20 with and compare with the correct answer.

The difference in 21 is the area of the far right rectangle. Find so that

~8 minWritten answer · check your work with Lemma

Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §5.5 The Definite Integral, #24

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.