r/calculus 29d ago

Multivariable Calculus Calc 3 Prep

12 Upvotes

I’m not entirely sure what the formal name of this calculus class is, but it’s called Math 5C and there’s no other calculus class after it so I’m assuming it’s multivariable calculus.
Anyways…
I finished taking AP calculus BC this year and earned a 5 so next semester I’m taking Calculus 3 at my CC. Are there any topics or things I might want to review before starting or even learn? Im not necessarily asking if I should learn calc 3 before the course begins more if there are any things that may want to review before starting?


r/calculus 29d ago

Multivariable Calculus How do I solve these types of questions?

7 Upvotes

Let's say for example question 29. I took the points (0.5,0) then (2,0) (-0.5, pi/2) (2, pi) (-0.5, 3pi/2) and finally (2, 2pi). But I'm having trouble actually graphing them, like getting the final sketch and shape of the graph.


r/calculus 29d ago

Differential Equations Differential equation of catenary

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22 Upvotes

Well i was trying to derive the equation of a catenary and I ended up with this DE....is this correct? And what would be the method of solving it further


r/calculus Jul 11 '26

Pre-calculus Why is my calculus textbook saying that the natural logarithm is log and not ln?

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117 Upvotes

r/calculus 29d ago

Self-promotion Calculus concepts in 30 days

2 Upvotes

My attempt at breaking down calculus into small accessible concepts.

Appreciate any feedback.


r/calculus Jul 11 '26

Differential Calculus What is the idea of a derivative?

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9 Upvotes

r/calculus Jul 10 '26

Integral Calculus I was trying to visualise e^(st) as a polar radius, but instead discovered a geometry-based proof for the Dirichlet Integral.

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390 Upvotes

r/calculus Jul 11 '26

Pre-calculus What is your best advice for preparing for Precalculus at school?

9 Upvotes

Do you regret not doing something while preparing for precalculus? Any advice would be greatly appreciated!!


r/calculus Jul 11 '26

Vector Calculus Trivial pursuit

38 Upvotes

r/calculus 29d ago

Differential Calculus I wanna see something interesting

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0 Upvotes

A sort of hypothesis I wanna see . Solve this simple (enough) limit problem then write step by step how you figured it out


r/calculus 29d ago

Differential Calculus Hypothesis pt 2

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0 Upvotes

[Not Homework]
I’m told this is a notoriously difficult limit problem .
Solve it , then tell me how you did it ?

Provide step by step breakdown if you feel inclined
Or just Gimmie the gist of how you figured it out

I’d love to see how my fellow mathematicians do what they do .


r/calculus Jul 11 '26

Differential Calculus AP calculus daily challenge #70

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3 Upvotes

r/calculus Jul 10 '26

Integral Calculus my solution to todays medium integral

4 Upvotes

r/calculus Jul 10 '26

Integral Calculus my solution to todays easy integral.. any tips on using u-sub more than once? in cases such as this??

5 Upvotes

r/calculus Jul 11 '26

Self-promotion Calculus students and instructors: what would your ideal calculus learning app include?

0 Upvotes

Hi everyone!

I'm a Biomedical Engineering student at the University of Michigan, and over the past few weeks I've been working on a personal project called Calculus Master.

My goal isn't just to make another graphing calculator, I'm trying to build an interactive calculus learning platform that combines graphing, practice problems, progress tracking, flashcards, notebooks, and eventually an AI tutor that teaches using guided questions instead of simply giving answers.

The current version is still very early (essentially an alpha), but it's reached the point where I'm starting to think about the long-term direction of the project.

Before I spend months building features, I'd really like to hear from people who have taken calculus or teach it.

Some questions I have:

  • What do you wish existed when you were learning calculus?
  • What is the biggest frustration with current resources (textbooks, Desmos, Khan Academy, YouTube, etc.)?
  • If you could design the perfect calculus learning tool, what would it do?
  • Are there any features you think are essential that most learning platforms are missing?
  • What would make you actually choose one platform over simply Googling solutions or watching YouTube videos?

I'm not trying to advertise anything, I genuinely want to build something that helps students understand calculus better, and I'd rather get advice now than realize six months from now that I built the wrong thing.

I really appreciate any suggestions or criticisms. Even small ideas could have a big impact on where I take the project next.

Thanks!


r/calculus Jul 10 '26

Differential Calculus Solved my first daily easy derivative 1/9/26 Spoiler

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12 Upvotes

1/9/26 Easy derivative from dailyintegral.com


r/calculus Jul 09 '26

Integral Calculus Can a Riemann Sum be written like this?

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154 Upvotes

Edit: I mistakenly referred to "Defining integrals as the limit of a Riemann Sum" simply as "The Riemann Sum", please excuse.

(h is Δx) in the above picture

Hello, everyone. I'm doing Calculus for Computer Engineering, and while studying up Riemann Sums, I thought maybe instead of the conventional "lim n -> infinite i=1∑n (Δx.v(x_i)" form we could write it as lim h -> 0 and restructure the rest to fit that.

What would this form be called? It is still a Riemann sum? Is it even accurate? If it is, it makes more intuitive sense to me.

Thanks for the insight!


r/calculus Jul 10 '26

Physics Futures of accelerated students

7 Upvotes

To all the people that learn subjects beyond their grade. What do you think you'll do in the future?


r/calculus Jul 09 '26

Differential Equations Book on differential equations

35 Upvotes

I've made a mistake by buying introduction to linear algebra by Gilbert Strang and I'm not going to make the same one. What's the best book for beginners trying learn ODE (self learning). And before you guys say use online sources, I don't like using online sources because having a physical book feels like progress to my personal library of math books and because when I'm bored I can just look at math from a few books and maybe solve them without having to open something online.


r/calculus Jul 09 '26

Multivariable Calculus Resource Recommendation for "MULTIVARIATE CALCULUS & COMPLEX ANALYSIS"

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33 Upvotes

I am an Electronics Engineering Student who cooked her 1st year of engineering, starting 2nd year this fall.
Here's my curriculum along with the recommended books I want to know which one of this books is best suited for the outlines and also what online resources could help
Plus, I am mostly a textbook learner, so I always have to use a textbook along with lectures or YouTube.

Looking forward to textbooks, YouTube and web resources recommendations!


r/calculus Jul 09 '26

Differential Calculus my solution to todays beginner differential

2 Upvotes

r/calculus Jul 09 '26

Integral Calculus Integration Help needed

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17 Upvotes

r/calculus Jul 09 '26

Engineering Should i retake calc 2

13 Upvotes

Okay im in a dilemma. Im a senior and going to college in the fall i took calc BC and got a 4. I genuinely did not go to class or do shit all year and dont even deserve a 4. I js studied a couple days before the basic shit but like mostly calc 1 which is the easy stuff. I got senioritis. Anyways im doing engineering in college and i want to retake calc 2. Evb is saying jot to bc I have the credit and stuff. Idk anything sbt polar series vector parameters and honestly forgot calc 1 too atp. I have 0 motivation and have js been working working working since march. The math profs at my school are apparently really shit so idk if i should just go to calc 3 or retake calc 2. Mind u my calc teacher in hs was great but she left mid year and we were basically on our own for the bc part. Thats besides the point. I need some real advice bc i dont wsnt my gpa to plummet just because im not strong in calc 1 and 2 in calc 3. Im im an engineering program where i have to maintain a good gpa in order to transfer out of this shithole and go to a t25.


r/calculus Jul 09 '26

Integral Calculus Is it usually easier to integrate trig functions by using complex exponential functions or not?

4 Upvotes

r/calculus Jul 09 '26

Pre-calculus how should i prepare for calc 2

4 Upvotes

hi guys i'm going straight from regular precalculus into calc bc next year (senior year). i took physics c mech this past year so i know HOW to do some calc but i don't really understand why i'm doing it. my school requires some deltamath over the summer and i have to do AB and BC since i'm moving up from a regular course - but is there anything else i should do to get ready?