Elementary Math

Ask questions about elementary math, up to college/university level.
I will try to answer.

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Any thoughts OP. I can just go through the steps and figure it out from the book. But you did sorta say you'd try.. Just curious what you'd get.

84 units

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try 60 then

-42 is wrong as well, if that was your answer in square units.

It's -42

>hurr area is always positive
eh, not really, but try 42 then

It was 42! Nice.

I'll post a harder one in a second. It has 2 parts btw. If you are interested.

go ahead

go on

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Noice! So the second part is just a multiple choice. I'll still post it, but I'll post another more difficult problem. I'd have picked a different problem but it doesn't let you see them before you answer the previous.

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B

It's (b)


Here is the next one. This one should be more difficult, I hope.

9000

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what is the square root of pi?

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if I had to guess, x bar would be 9000. When you evaluate the integral you get 0 though, so that might be wrong.

1,772453...

Hell yeah

Part 1 of 5 if you guys are up for it.

just introduce a wrong answer then plug and chug with the formula they give you

true, no need to ask if you don't have questions about it

I don't see anyone else asking any questions..

Here this one is only one part. And if possible, could you do it like this

quiz? homework?

what are the best things to have mastered for vector calculus and DEs? i want to be as prepared as possible

How would you solve this

divide by sin(x)

also
>this handwriting
Are you... a girl?

That doesnt work out, no Im not a girl

plug it into WolframAlpha

I know the answer just want to do it by my own

Then you should read your book.

Not really interested in solving this, and it's been a while since I looked at these types of equations, so it would take a long time to get the answer right, but have you looked at various different identities?
Like cos(2x),cos^2(x), or cos(x)=sin(pi/2-x)?

Good thread, we should have this once a month.

Just curious what is

1.) y=1/2+1/4+1/6+1/8...1/n; where n is an even number

2.) z = 1/1+1/3+1/5+1/7+1/n; where n is an odd number

3.) x =1/1+1/2+1/3+1/5+1/n; where n is a prime number

is the problem correct up to this part? seems to be part of a bigger problem.