r/calculus

I start my major soon but i want to get ahead on calculus because i heard its one of the hardest courses

Have any of you had an easy (or relatively easy) time with Calculus I and II, but not with III? I know II is generally considered the hardest, but has anyone else had this experience?

I was in the middle normalizing a wave function when i realized i don’t actually know what an integral is. I know it’s the area under a curve but why? Why do we want the area under a curve, what does it mean? I’ve tried looking it up but nothing is sticking.

Just letting people know about my side project website/app for brushing up on various topics of math (calculus, linear algebra, topology, etc).

Completely free and just for fun! There is a currency for different minigames, screens and themes. But they are just earned from learning.

Mostly built this for my own curiosity but if people like it i can extend it. What topics would people like to see covered? What is missing from educational resources to get people to engage more? Would love to hear people's views. Learning is awesome!

There's a dev option in settings if you just wanna play around and not have to earn the currency (phi)

cheers, Flirp

Hi all! As the title says, I’d like some insight into resources for studying multivariable calculus, since I don’t find the book my professor assigned very good (we’re using Stewart).

I’ve done some Googling and looked at Reddit, and it seems like Spivak’s Calculus, Hubbards Vector Calculus, and Colley’s Vector Calculus are good choices, but I’ve also seen this website mentioned on Discord: https://math-website.pages.dev. Any input or insight would be appreciated.

https://preview.redd.it/0izjtlxtcutg1.jpg?width=2186&format=pjpg&auto=webp&s=ad04a782622165f4356d0276e94fe94d27dcfcdd

https://preview.redd.it/2rvrjh8vcutg1.jpg?width=2017&format=pjpg&auto=webp&s=35b9d303301fda521c6f727a19b1f28dd89a0c26

https://preview.redd.it/4cirbo1sostg1.png?width=1174&format=png&auto=webp&s=af90c4ce8f46f51a81659aaa5e1016290e6c98d3

on this graph would the x value absolute max be 1 or DNE? I thought it was DNE since the point (1,2) doesn't exist but my friend is telling me it's 1 because (1,1) is the highest closed point.

I am going to study Artificial Intelligence in September, in which I will have to pass Calculus, LinAlgebra, Stochastics/Statistics and Computation Mathematics. (or be banned)

I never had any Calculus beyond the power rule. Recently I acquired Precalculus by Stewart. I am overwhelmed by the sheer size of the book, and the amount of resources that exist for studying Precalculus My goal to have solid algebra and trigonometry skills, and some basic knowledge of Calculus before I start in 4 months.

How would I go about doing this? I need help on creating limitations on what to do, and what not to do. (I.e. resource selection, exercises...)

• 7-10 Days per Chapter of Stewart
• 1-2 days per Subsection
• Khancademy Precalculus + Calculus (+Lin Algebra dabbling)

Any human advice is welcome!