Recent content by robierob

Find the flux of the field F=(-2x,3y,Z) across the surface S where S is the portion of y=(e^x) in the first octant that projects parallel to x-axis onto the rectangle with 1 <= y <= 2 and 0<= z <= 3. Define the unit normal vector n to point away from the yz-plane. Im not exactly sure about...

Your totally right. Thats one tight interval to make a guess for though. I was only about .2 away from a working guess. Thanks

so I was helping my friend today and ran into a problem. the problem was to use Newtons method to approx. the intersection points of two graphs. f=x^2 g=cosx so I subtracted f-g, found the derivative and pluged in some guesses. Except all of my guesses just blew upwards in values...

Thanks Thanks, that put me back on track!

I need to find out how to solve this integral with the indicated changes/transformations. int.[0 to 2/3]int[y to 2-2y] (x+2y)e^(y-x) dxdy u=x+2y v=x-y I know that the xy region is x=y y=0 and y=1- (x/2) which is a triangle so I created systems with U and V but can't get a new...

http://pages.pomona.edu/~sg064747/teaching/F06-31/Lecture/F06-31-Lecture08.pdf

Ok, I am going to try and see how that works out. Thanks

should I stick to cylindrical coordinate for this one?

When I started out on this problem I attempted to use cylindrical coordinates. The set up looked nice but integrated, no so nice V=SSS rdzdrd(theta) z from r^2 to rt. (2-r^2) r from 0 to 1 and theta from 0 2pi but when I got to integrating with respect to r it got weird, mabey a...

The part about spliting it into two intergrals doesn't really make sense to me. I have seen the solution to a similar one with a cone instead of a parabloid and it was done with one triple intergal not two added togreather. That's what you mean right?

I need to use spherical coordinates to try and find the volume of the region bounded by x2 + y2 + z2 = 2 which converts to p=Sqrt.(2) a sphere and z = x2 + y2, a parabloid which I converted to cot(phi)csc(phi)=p I hope the greek letters for these are comonly used...