Elementary Math

>>8229102
>>8229099
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.

>>8229115
>>8229114
84 units

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>>8229125

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>>8229125
>>8229115

>>8229129
try 60 then

>>8229130
-42 is wrong as well, if that was your answer in square units.

>>8229129
It's -42

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

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>>8229134
It was 42! Nice.

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

>>8229136
go ahead

>>8229136
go on

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>>8229136
>>8229134

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>>8229140

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>>8229143
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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>>8229156

>>8229156
B

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>>8229158
It's (b)


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

>>8229162
9000

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>>8229167

what is the square root of pi?

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>>8229162

>>8229170
if I had to guess, x bar would be 9000. When you evaluate the integral you get 0 though, so that might be wrong.

>>8229173
1,772453...

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>>8229175
Hell yeah

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>>8229182
Part 1 of 5 if you guys are up for it.

>>8229185
just introduce a wrong answer then plug and chug with the formula they give you

>>8229187
true, no need to ask if you don't have questions about it

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>>8229193
>>8229187
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>>8229175

>>8229214
quiz? homework?

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

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How would you solve this

>>8229296
divide by sin(x)

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

>>8229311
That doesnt work out, no Im not a girl

>>8229316
plug it into WolframAlpha

>>8229319
I know the answer just want to do it by my own

>>8229322
Then you should read your book.

>>8229296
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)?

>>8229099
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

>>8229296
is the problem correct up to this part? seems to be part of a bigger problem.