So.... How about a math question?

[Iron Lightning]

Here's one for ya.

The integral of zee-squared dee zee,
From 1 to the cube root of 3,
Times the cosine,
Of 3 pi over 9,
Is ______________________

int(Z^2)dz = (Z^3)/3
((cbrt(3)^3)/3)-((1^3)/3) = 2/3
(2/3)*cos((3*pi)/9) = 1/3
Assuming that you're using radians, if you're using degrees then the answer is:
0.666555319636

oooh, scary.

 

[Iron Lightning]

if f(x)= 3x^3 + 4x^2 +2
what does f'(x) equal?

f'(x) = 9x^2+8x

This is turning into a bit of a fun math thread.

 

[David_G]

Shouldn't this be like, easy?

16x+3 = -14
16x=-14-3
16x=-17
x=-17/16
x=-1,0625

 

[Amethyst Wind]

How about a simultaneous equation:

4x + 7y = 136
10x + 15y = 330

Find x and y. (There may or may not be more than one correct answer)

x = 27
y = 4

Indeed. Now find the other answer.

 

[mettle_edge]

Here's one for ya.

The integral of zee-squared dee zee,
From 1 to the cube root of 3,
Times the cosine,
Of 3 pi over 9,
Is ______________________

int(Z^2)dz = (Z^3)/3
((cbrt(3)^3)/3)-((1^3)/3) = 2/3
(2/3)*cos((3*pi)/9) = 1/3
assuming you're using radians, if you're using degrees, then the answer is
0.666555319636

oooh, scary.

To fill in the blank " the log of the cube root of 3"
3^1/3
Put in whole integral form: (COS(3pi/9)) S z^2 dz= log(e^1/3)
1
I think...

EDIT: ok, just put the 3^1/3 and 1 above and below the S

 

[Eumersian]

16x+3 = -14 |-3
16x = -17 |:16
x = -17/16

Correct me if I'm wrong.

same thing I got but my friend keeps saying it's wrong. She says it's 1.something.(her words not mine)

I think you're right, and your friend is wrong. Ask them to do it out like the example above. The only way I can imagine her finding it to be 1 is if they count 16x and another 1x (because one vale x implies 1x). Then that would be -1.

 

[GrinningManiac]

Maths was never my thing

Question: If John is X times older than Ben, but Ben is 1/2 the age of Achmed, and Achmed is randomly put in English exams because not including ethnic minorites in maths papers was banned under the F*cking Pointless convention of 1922, then how does this prove John is right in stating that "All things are relative to one and other, because incest is awesome"

 

[Iron Lightning]

Here's one for ya.

The integral of zee-squared dee zee,
From 1 to the cube root of 3,
Times the cosine,
Of 3 pi over 9,
Is ______________________

int(Z^2)dz = (Z^3)/3
((cbrt(3)^3)/3)-((1^3)/3) = 2/3
(2/3)*cos((3*pi)/9) = 1/3
assuming you're using radians, if you're using degrees, then the answer is
0.666555319636

oooh, scary.

To fill in the blank " the log of the cube root of 3"
3^1/3
Put in whole integral form: (COS(3pi/9)) S z^2 dz= log(e^1/3)
1
I think...

My calculus is a bit rusty, but I'm pretty sure that a definite integral going from a to b of f(x) is equal to F(b)-F(a) or (in other words) the value of the integral at point b minus the value of the integral at point a. The fact that our answers do not agree shows that one of us is incorrect. I should also mention that because trigonometric functions are dependent on units, it is impossible to determine an answer without knowing the units used.

 

[Amphoteric]

What about chemistry Mole Equations. (I don't know how to do subscript)

An antacid tablet contains 0.01g of Mg(HCO3)2. What mass of HCL will it neutralise.

Equation- Mg(HCO3)2 + 2HCL = MgCl2 + 2H2o + 2Co2

 

[Iron Lightning]

Maths was never my thing

Question: If John is X times older than Ben, but Ben is 1/2 the age of Achmed, and Achmed is randomly put in English exams because not including ethnic minorites in maths papers was banned under the F*cking Pointless convention of 1922, then how does this prove John is right in stating that "All things are relative to one and other, because incest is awesome"

Duh, the answer is 42.

It always is.

 

[Trivun]

16x+3 = -14 |-3
16x = -17 |:16
x = -17/16

Correct me if I'm wrong.

same thing I got but my friend keeps saying it's wrong. She says it's 1.something.(her words not mine)

She be trolling. Tell her that it's equal to 2 and ask her to disprove you with her workings.

As a maths undergrad I agree with this. I would love to see her try and do that, purely for the lulz .

Seriously though, OP, it's -17/16, or -1.0625. Just like the others said. Your friend probably won't be passing this test if she doesn't believe that simple bit of working out...

 

[tris4992]

17/16 is correct
however so is your friend cus type in your calculator 17/16 and thou shal receive 1.0625

 

[hyperhammy]

This was a fairly simple question...

What year are you in?

I'm guessing around 7th grade, that's about the year we covered it... =P

 

[MajorLandmark]

What is the general solution to the differential equation:

2d^2y/dx^2 + 2dy/dx + 5y = 13sin(x)

Anyone who can do this I'd wager, has a degree. On that note, dont expect me to explain how to do it . I do have the answer though.

 

[nuba km]

I've got a good maths question. if person y is standing 10 meters away from person x and person x throws a cake at 5m/s which is decelerating by 0.5 m/s (I can't make the symbol above the s that I need to but if you bother to figure this out you know what I mean) and person y starts running 1s after the cake is running and is accelerating at 1m/s (same as before) will the cake hit him if yes at what speed will it hit him and how much time will it take for the cake to reach him.

 

[randomsix]

X is a capitalized version of a letter in the English (and various other languages') alphabet. Do I win by technicality?

 

[szs0061]

I've been sitting here thinking about some math problems to help me study for our basic math test but one problem my friend game me I cant figure out. Can you solve it?

16x+3 = -14 What is X?

i dont want to check if anyone has pointed this out yet, but its -1 and 1/16

 

[KEM10]

What is the general solution to the differential equation:

2d^2y/dx^2 + 2dy/dx + 5y = 13sin(x)

Anyone who can do this I'd wager, has a degree. On that note, dont expect me to explain how to do it . I do have the answer though.

Oh man, that brings me back. I hated Calc 2 and 3. So much so that I cannot remember how to solve that when there is a variable on the other side of the equation.