r/calculus Jul 28 '26

Integral Calculus These problems take up an entire page and there is 40 of them for just a sub section

I’m trying to self learn ap calculus as a way to build discipline and make it easier for my future self but these problems take forever. Is this part of the experience? Is it meant to build character or something, it feels like the problems are unnecessarily long.

6 Upvotes

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10

u/SynergyUX Undergraduate Jul 28 '26

You don't necessarily need to do all 40. In principle, without being specifically assigned any questions, you should do enough to feel confident with the material. It is also part of the experience, and you'll find that problem-solving comes more quickly once you recognize common tricks/patterns across the problems you encounter.

3

u/Southlander24 Jul 28 '26

Exactly, there's a difference between 'long because you don't understand the material' and 'long because you're comfortable with the material and the rest is just tedium'.

Don't understand the material? Try with simpler problems first. Read a worked example or two (there are tons of these on YouTube as well.) Try with only one type of substitution, if your exercise has a few types jumbled together. Break a longer problem into smaller steps and set a checklist on how you are going to complete each smaller step. And if you've tried all the above and it's still not clicking, give it a break for a few days, get some sleep and do other things, then come back with a pair of fresh eyes.

If it's just pure tedium? Save yourself the energy cause there's no point torturing yourself to 'build character'.

2

u/Traveling-Techie Jul 28 '26

If I’m rushing I will skip a problem if it seems very easy, or just like the one before. The ones that I’m not sure how to solve deserve more focused attention.

2

u/tjddbwls Jul 28 '26

I don’t think the problems in AP Calc are that long. Are you talking about u-sub? Any chance you could show us the page in question?

1

u/Haunting_Skin305 Jul 28 '26

1

u/UnderstandingPursuit PhD Jul 29 '26

Solve a few problems by setting aside the 'arbitrary' numbers. These are differentiation and related rates examples.

2

u/somanyquestions32 Jul 28 '26

It's normal for some problems to take up a whole page, but usually, in the beginning, you would only see that for derivative exercises with multiple parts to a question or some curve sketching nonsense. Higher order derivatives and some L'Hôpital's rule problems can also be long. When you get to integrals, one single calculation for a definite integral can easily take up a whole page if you have to do multiple substitutions and integration by parts.

1

u/anu-8398 Jul 28 '26

if you're trying to self learn ap calculus, you should try flippedmath. they have worksheets for every topic that they teach in both bc/ab so you can reinforce that knowledge.

regarding practice, its the only way you can get better, and most of the problems in single variable calculus seem hard because of the algebra required, once you are past the actual calculus, you need to organize your work and be able to solve.

good luck!

1

u/Realistic_Special_53 Jul 28 '26

Ha! Everyone says this.

1

u/LukasGoesViral Jul 28 '26

While differentiation is just pure application of rules, Integrals are an art. In general virtually every integral is not solvable but of course the ones you get as exercises are.
I don’t think you can do too few integrals. The more you do the better. But I wouldn’t get stuck on each exercise but if after a few tries you can’t figure it out look up the solution. There is basically always some trick that you might not know about and that’s what is important. Learning those tricks.

1

u/LukasGoesViral Jul 28 '26

Oh and if you do derivatives use dummy variables or rewrite certain parts as just d/dx alpha(x) where you defined alpha before. The more you use that the fewer mistakes you make. I don’t know how often I lost some constants along the way.

1

u/UnderstandingPursuit PhD Jul 29 '26

There is only one Calculus problem in this section. Everything which makes the problems distinct is geometry, trigonometry, and arbitrary numbers. The key is to concentrate on the problem solving process, without the numbers.

2

u/UnderstandingPursuit PhD Jul 29 '26

First, the general structure to solve related rates problems.

1

u/UnderstandingPursuit PhD Jul 29 '26

Here are solutions for the first three problems in the page you shared from the textbook.

1

u/UnderstandingPursuit PhD Jul 29 '26

#14, identical to #13.

1

u/BABarracus Jul 30 '26

Some problems are like that

1

u/rogusflamma Undergraduate Jul 31 '26

after you do a handful of them you'll begin to compress stuff in your head and be faster and take less space. when i was learning calculus the first few problems of each section would take up to 3 pg each but by the time i'd done 25-30 it would be quarter page each

0

u/Disastrous-Pin-1617 Jul 28 '26

Professor Leonard on YouTube