Recent content by sun1234

That's what I think of. Also how do you know when to test for absolute converges and conditional converges? Thank you for trying to help.

https://lh3.googleusercontent.com/z468bYHn_-Ufcp0M_XFbTgUtEL2qDzNUZSRgjU3Qz8ZcFj8pMg5k7Ip9i9EejHNPdBQc3EltXrAI2Ck=w1342-h587

Oh yes, you're right. So I have to change the whole equation then. I really appreciate your help.

Why is the radius y? I thought the radius is x or (x-5), I'm not not so sure though.

I'm sorry. The question is correct. 2/√x is the derivative of 4√x.

Homework Statement The region bounded by the graphs of the curves y=4√x , y=0, x=5, x=12 is revolved about the x-axis. a) Find the religion lateral surface area of the generated volume. b) Find the total surface area of the generated volume, including both ends. Homework EquationsThe Attempt at...

That's My (not my in English). I already calculated, so don't bother about it. Thank you for trying to help. By the way, do you know where I can post quick questions? I have an integral that I can't figure out, but I don't want to make a new thread about it. Thank you.

Thank you so much. How blind I am!

Here is what I got so far. https://lh4.googleusercontent.com/-Hm-tHWU3uR5FHIcZIqSHVDGDjaKA1lA68L2m_DgLeU7LMUmwV2qcVIQr8_kEQ_AjkFJ5PjlGz8=w1256-h843

Homework Statement Find the x-coordinate of the centroid of the region bounded by the graphs of Homework Equations y= 5/(√(25-x2)) The Attempt at a Solution I stuck at finding Mx

Here is what I got: when being affected by the the forces come from the weight of the water molecules above them (1 and 2) 1 is the force from gravity pulling the molecules down 2 is created just like the floor when you push a balloon toward the floor. Then the floor will send back...

I got it but "This element has pressure forces acting on all sides of it and is not moving since the water is still". I know that element for example a teddy bear maybe will be affect from any direction on Every single point on it body by the pressure.I know it's there but where does it come...

I did my research and the answer I got is deeper I go the more weight from the water above me that I have to handle just like lifting weight. Like in the picture below It is reasonable that I will feel the pressure on the top of my head and on the upward side on my arms ( like in the...