# EudecioGabriel

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Quark

## Profile Information

• Favorite Area of Science
Math
1. ## Ethical Q. Split from Can Fire be explained ...

"Whether we should" ? Really? For a lot of things we don't wait the appointment of ethics or philosophy, but for building weapons we do?
2. ## Conic Sections Rotation

How do you explain the formula tan(20) = B/(A-C). In which Ax2 + Bxy + Cy2 + Dx + Ey + F = 0 ?
3. ## Ethical Q. Split from Can Fire be explained ...

I mean't we shouldn't use science in any forms to develop violence. Oh... it would be cool something more emotional I guess with explain not killing other's while you're safe in your house.
4. ## Find the area of 9 x^2 + 9y^2 + 72 x − 12 y + 103 = 0

I'm trying to use Integrals, what do you think? But this exercice is from Vectors and Analitic Geometry PDF, do you have another way of solving it? And I just can not find the center... can you help me?
5. ## watts and power, converting dw/dt to an integral, and changes in integral interval units

Hi! You should read about The Fundamental Theorem of Calculus, it's really easy believe me, you'll understand why the range of the Integral changed! It's not a eletrical understanding problem is just a few calculus basis . Good Look. And search for questions!! do some questions until you find one you have to make changes in the range of the integral! I lost one question about this last test , so I took 9 from 10 ( In Brazil we score in numbers, not in letters)
6. ## Ethical Q. Split from Can Fire be explained ...

I don't think we really should use science to explain violence

Question: Sectioning a paraboloid for a plane perpendicular to it's axis and the three units of the vertice, we find an ellipsis of axis equal to 6 and 12 units. Write the equation of the paraboloid. I don't even know how to start! Thank you!
8. ## Integrate area between circle and a function

COOL!! THANK YOU GUYS!
9. ## Integrate area between circle and a function

Hello! I want to integrate the area between the function y(x)=x^2+y^2=1 and h(x)=|x|. Can you help me? Thank you!!
10. ## Integrate area between circle and a function

Hello! I want to integrate the area between the function y(x)=x^2+y^2=1 and h(x)=|x|. Can you help me? Thank you!!
11. ## Descriptive Geometry

Hi, I'm trying to understand why when a point belongs to a straight line the epura looks like this, in this case (A, B and C are the points) (R,T and (EF) are the lines) Sorry eventual english mistakes
12. ## How to calculate areas betweens functions?

Ok. BUT ( integral of (x^2 + 5 ) - integral of (x^2 + 3 ) calculates the same way as (integral of (-x^2 +5) - integral of (-x^2+5) ?
13. ## Math Teachers. Show me the Hook!

Do you want to be my professor? Did you actually wrote these lines of code for this post? This is very motivational I think
14. ## How to calculate areas betweens functions?

I'm using the book Calculus, 6th Edition (Stewart's Calculus Series), and I'm having some trouble to figure out why he calculates the difference between two integrals to find the area between then. It's ok for me to understand when the y values of both functions are positive. But when one of the y values in one of the functions is negative he uses the same formula (integral of A) - (integral of B) {A and B are two functions}! What about that rule that when the y value of the function is negative the integral is also negative?
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