Hey /sci/ I need help.
Im trying to learn/teach myself pre-calc.
Can anyone give me a good and preferably free source to learn pre-calc? One that would give me a strong understanding of the concepts.
Check the /sci/ guide next time.
There is no subject called "pre-calculus." You should have a very good understanding of elementary algebra, trigonometry, and know your basic rules for dealing with functions.
Calculus is fairly easy. I'd say there's more online resources than one could count.
May ask what of trig is needed for calc?
I like to think I have a strong understanding of algebra/algebraic functions, but have never taken a trig course I don't think I should dive into calc without it.
It's fundamental as a tool for solving integrals and doing multivariate calculus. Trigonometric forms pop up everywhere.
I was taught that if you can't derive all the most common trig identities from scratch, you don't know enough.
You need to know trig identities, how to manipulate trig functions, how to simplify them and how transformations of trig functions work.
So you really need to understand trig so when you start derivatives and integrals, you are comfortable with working them and understand whats happening. Especially with inverse functions of trig.
He's ok with trig, just spend like an hour memorizing a list of trig identities. Trying to derive sin(A+B)=sinAcosB+cosAsinB is sort of a waste of time, in my opinion.
He's good with the part of pre calc that isn't trig identities, though. Just make sure you do the exercises on there and whatever you can find online.
As for calc though, I would recommend against him because he doesn't define things well... at all. He doesn't even derive the fundamental theorem of calculus, he just states it and talks about it for 10 minutes
Also, if you really like watching an Indian guy draw out a single problem for 4 hours in 93 different colors, I'd 100% recommend him.