How good are you with maths Jow Forums? For example everyone could do some derivatives...

How good are you with maths Jow Forums? For example everyone could do some derivatives, but could you calculate derivative of f(x)=cosx in point x0=Pi/4 (using only definition)?? Sometimes i think i am too much of a brainlet to be programmer

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Derivation is piss easy, although I haven't done it by hand in 10 years so I would have to have a quick glimpse at the rules again to refresh my knowledge.

But in general, I'm quite shit at mathematics. However, through hard work and dedication, I worked through all the obligatory match classes in uni, and got passing grades, and for some reason, "computer maths" (algos, discrete mathematics, logic, statistics etc) somehow stick because I'm able to understand their practicality.

die fucking frogposter

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If you don't have access to a symbolic toolbox, use the finite difference method. Be careful with numerical stability, though.

I'm finishing my Calc 2 final tomorrow, literally.

d/dx (cos pi/4) = -sin(pi/4) = -sqrt(2)/2

Is that what you wanted?

wew nice thinly veiled homework thread faggot
how much of a brainlet do you have to be to not be able to use limits

It's just the chain rule that gets a little hazy after a while.

Might as well cheat sheet it now, just like the rest of the math nerds.

>stem brainlets posting answers ITT
>inadvertently helping some underageb& with homework

Easy as fuck.
So cos'(pi/4)=-sqrt(2)/2

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>chain rule
I was going to type "substitution rule" (closer to what it's called in my own language), but realized that it was probably not called that in English. Yes, that's the rule I always forget.