Find Volume with Square Cross Sections

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High School Calculus Teacher explains how to find the volume of a solid with square cross sections!

In Calculus, an integral can be used to find the volume of a solid whose base is bounded by the graphs y=x+1 and y=x^2-1 with square cross sections taken perpendicular to the x-axis!

Comment below about any questions or comments you have!

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Jazzy piano AND integration in the same video - how much better does it get?!?! Love the mathematical music starting at 4:45 that comes back throughout!!

When I took calc in high school, this was always the topic I struggled with most since I tried too hard to memorize the formulas instead of focusing on the conceptual/visual understanding of what the integration/the process actually accomplishes. This video would have saved me a lot of late nights! 😂 I really like how you spent time graphing not only the two functions but also the red square and explained how our goal is to add up an "infinite amount of squares". You did a great job throughout making that red square a common theme to point back to, even when doing the algebra and the integration. Another AWESOME piece that really stood out to me in this video was your explanation of WHY you found the intersection points of y = x+1 and y = x^2 - 1 - since we needed them for the integral set-up later. Having a preview and a justification of their purpose in the problem was a fantastic addition that really helps see the whole puzzle come together, even from the start!

It's so cool how calc can be used to find volumes of these irregular 3D shapes instead of having to just rely on formulas for cones/spheres/cylinders/etc. It really broadens your perspective and opens your eyes to how fascinating studying 3D objects can be!

This was another fantastic, well-thought-out video from you that was very organized and clear to follow! Thanks for posting these super helpful weekly videos, looking forward to future ones! ...Okay, now I'm off to my piano to try to learn this catchy jazz riff! 😁🎹

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