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lemme suggest you a lil maths test imgur.com/a/RwnSZRM try your best and write answers in comments

b

That's easy. Try a high iq thread hltv.org/forums/threads/1982814/br-math-..

41

im bad at maths and physics

41.
Try this one. prnt.sc/mkm77s

Is it pi?
> f <- function(x) {(1+log((2+sin(x))/(2-sin(x)))*(sin(x)^4))}
> integrate(f, lower=-pi/2,upper=pi/2)
3.141593 with absolute error < 3.5e-14
If i wrote the function correctly

Nope, not pi. You have to use properties of definite integral to solve this one.

screw integrals I'm struggling in it ;-;

Lol. Btw first ranked student in the Asian Mathematics Olympiad that I gave last year was Vietnamese ^^

:O well I've never attended in, even in district scale :p

Btw any idea when is crazyguy coming back to bootcamp? He doesn't reply to non-Vietnamese chat. They have an upcoming tournament very soon.

No men I don't follow him, thought he is inactive

0 men))

no men((

The answer is c).

Correct, n1. Did you solve it using properties or by using graph?

Maybe luck LOL

Neither – I used Maple (a math SW) :D Yeah, I couldn't really be bothered to solve it on paper, but I was curious nevertheless, so I got a little help.
But if I were to solve it, I would use properties – although I don't really remember the rules/tricks and would have to look it up.

I would have done the same lol

think its c
failed 1 thing on the start

no

Yes, your edited answer is correct. Did solve it using properties or by graph?

properties, i was bored

What's the rule for integrating a product of two functions? Or how did you do it?

When the upper and lower limits are the same but the only difference being their signs, you have to use this property:
Replace x by -x.
If f(-x) = -f(x) [That means it is an odd function] = > It's integral is zero.
if f(-x) = f(x) [an even function], you have to multiply the integral by 2 and replace the lower limit by 0.
In the question, if you observe, you would multiply sin^4x inside the bracket. The first function you would get is an even function and the second one is an odd function, then you integrate them separately. From there, it is very simple.

That looks like a pain, not hard to solve, but so much writing, LOL

Edit: nvm

its 1.178097245

Engineering kar raha hai kya bhai

is this for 5 yolds?

yes

+1

its pretty herd men wtf))))

yes

yes

41

40 + 40 x 0 + 1
80 x 0 + 1
0 + 1
= 1
A is the only answer, anyone who says otherwise needs to go back to school

ur trolling? xD

0/8

lul

bait not gonna work, go home

0/8

xDD

Nice try tho

Hm

expected from south africa

cmonBruh

i wonder why wakanda is fictional

nt lmao

0/8

xDDD

I don't understand why everyone is laughing. Even Google agrees with me check the screenshot, are you trying to tell me that Google is wrong? Also have a look at Quora description on the first website link.
Typical brain-dead hltv
imgur.com/a/8fMgsWj

You can't even use Google rip

You gotta be fucking kidding me
Back to school pls

nt Forsaken, I know you used inspect element on the website

lmao do you even know how inspect element works? idiot

baited

What's your educational qualification???

I had scored 248/360 in JEE Main 2018. Right now I am studying B.Tech at CSE from a top NIT.

Damn
I am a jee aspirant
got just 90 percentile in btech jan's
And 98 in b. arch
But i have no heart for architecture
I need your help, guidance anything
'Cause i fucked up jan badly
Could have easily scored 100 more with a better planning ;__;

PM me your discord

Konse nit mein hai....

+1 even nasa agrees with you
i.imgur.com/ohAaZTE.png

Thank you NASA, very cool

elon musk as well actually
i.imgur.com/31fMMQc.png

What do you expect, Elon comes from South Africa too so of course he can do simple math.

lmaooo expected from SA

41

41

B, 41

1 or 82

(40+40) x (0+1) = 80 x 1
answer is 80 so ya all got trolled there isnt even 80 in the answers options

+1 one normal man here

40 x 0 = 0
40 + 0 ( 40 x 0 = 0 ) + 1 = 41

what's so difficult in that?

99% have answerd wrong so its hard right ?

no, because the answer is 41

you do (40+40) * 0 + 1 so a. 1
give me a hard one

expected bait from brexit

0/8 b8

Actual 3Head LUL

Oi bruvs, any lads? 3Head

brexit economist doing math to judge if it's a good choice to leave EU
LUL

this sums up all French people - retards

trigered

wtf so fucking dump people here
80 is the answer

?? what

+1

41 ez
Use bidmas

Use what

Rules for arithmetics operations,
Rule 1 - First perform any calculations inside parentheses.
Rule 2 - Next perform all multiplications and divisions, working from left to right.
Rule 3 - Lastly, perform all additions and subtractions, working from left to right.
Therefore the correct answer is 41 (b).

Expected answer from Jonathan "Mathematics Phd" E.

lol, ban incoming

I'm praising his skills and knowledge why would I be banned

Cya in 10

#120

that was a joke

Bye

#120

Ask him that idk

Hey guys out here knowing math

maths, you do it more than once

Expected answer from Jonathan "Mathematics Phd" E.

41

41

36

These tests are always the same shit "do you know in which order the calculations should be done"

the answer to this depends how you were taught and where you put the brackets its either 1 or 41, but how I was taught in the UK 20 years ago is that if there are no brackets you treat it as if there are none and solve the problem in sequence, so
40
40 + 40 = 80
80 x 0 = 0
0 + 1 = 1
But it also depends which rule you are using, so it can also be 40 + 40x0 +1 which would make it 41
In my basic school exam no rules were given and the answer they wanted was 1, but I'm sure if you went into further education on the subject the answer would be different depending what they ask for
Maths is fun!

you always multiply before sum/rest,

yes, it is international. First powers, then brackets, then multiplication / division and then add and sub

UK brain, no wonder they brexit

yes we are leaving the eu because I cant do maths. I have single handedly ruined my country :(

shame on you, no maths man

The only correct answer is 41, doesnt matter what you were taught.

+1
if you feel like theres room for interpretation you dont know how maths work.

OK I guess I was wrong. I left school 22 years ago give me a break :P
Though I still think the part about brackets and rules is correct, there are instances where the answer is 1, I agree I was wrong about the basic rules, if no special rules are present then the answer is 41
Thanks everyone for making me look stupid :P

the asnwere would be one in case (40+40)x0+1 then you sum 80, multiply by 0 and after that sum 1

" it also depends which rule you are using"
NANI ? you choose rule of math nowadays? LUL

the basic rule of maths is BODMAS, but there are others

The answer is 41.
/closed

41 now be quiet

ez 41

40+40*0+1 = Selena Gomez?

40 + 40 x 0 + 1 =
80 x 0 + 1 =
80 + 1 =
81

yes

but its formulated like shit, should be something like 40+(40x0)+1

K time for real questions
1) A ball of mass m and radius r rests on a sled of mass M, which in turn rests on a frictionless plane. If the coefficient of friction btwn the ball and sled is u, what is the maximum horizontal force F that can be exerted on the sled without causing the ball to slide?
2) A uniform stick of length L is pivoted at one end and released from rest in a horizontal position. How long will it take for it to swing down to the vertical position?

I haven't done physical equations in quite a few years so I will likely be wrong.
1) umg
2) PI/(2*SQRT(3g/L))
If you want the working out steps I can provide

1) no 2) kinda close

Welp, I tried, after 6 years you start to forgot things. There's a reason I didn't major in physics in my undergrad :)

posted solution below #163 for first one if you're interested

1) ug(m + M)
=> Since the ball doesn't slide, the acceleration of the system will be a = F/(m+M). A pseudo force will act on the ball of value ma and we have to apply equilibrium condition between frictional force and pseudo force for the ball. That is, umg = ma. From there we will get the value of F.
2) (2/sq.rt(3)) * sq.rt(l/g) [By applying law of conservation of energy between horizontal and vertical position]

1) you're missing a coefficient before M
2)close, off again by a constant

For the first one I am getting the same answer, can you tell me the solution?

Let A be the acceleration of the sled relative to the plane, and a is the acceleration of the ball relative to the plane.
So you have f = ma and F - f = MA
f_r is the total external torque on the ball about its mass center
f_r = I*alpha = (2/5)m*r^2*alpha
where alpha is the angular acceleration of the ball about its mass center.
If the ball rolls on the sled, the points of the ball and sled that are in contact must be at rest relative to each other, so that
a + alpha*r = A
f_r = (2/5)*m*r^2((A-a)/r)
f = (2/5)*m*(A-a)
combine f = ma to get A = (7/2)a and F = ma + MA = (7/2 M + m)a
and we know that f < or = uN = umg so ma < or = umg and a < or = ug
thus maximum horizontal pull on the sled with no sliding of the ball is
F = ((7/2)M + m)ug

oh right, I didn't use rotational mechanics in that question.

try this easy one. Quick maths.
i.imgur.com/d6OXieb.jpg

"the 21 hardest math questions"
"easy one"

2

I erased all this sin cos stuff. The one thing in math I denied to learn.

H. 2

41

82

What I won?

n0thing

6x28y

0123456789 the answer is among those numbers

41

(40+40x)*(0+1)=0
80x=0
x=0
people are so uneducated wow

all calculators say it's 1.

not the scientific calculator

I don't know how to use those features ;)
Dude, it's been so many years since I was in high school I don't remember any of that crap because I never used it again. Funny thing is though my job requires me to do math constantly as I'm a carpenter but for that all you need to know are the basics of adding, subtracting, multiplying. and dividing. I also deal with fractions a lot since I use imperial and of course things like finding averages and a bit of basic geometry.

It's alright mate, I was just saying that scientific calculators can apply BODMAS rule.