Recent content by Swallow

Thanks for the tips. Looks lke I'm in for a lot of guessing for the other parts

The assignment is about writing a bill of materials for this thing...although you're right it seems like I need to guess what the heck this thing is first :D But we just have to name the parts, not describe the working or anything We have no other details about the object.

Hint: I don't see a plus sign anywhere in your program.

Hi guys, we had an engineering drawing assignment, where we had to prepare Bills Of materials for various components, I did two components, but I can't identify what this third component is (see attached image). I would appreciate it if someone could tell me what in the world this thing...

*BUMP* Anyone? Its a pretty straightforward question.

No Calrik, the diffrential isn't a sphere's surface, the final result (Obtained after integrating) gives you the surface area of the solid formed when that particular curve is revolved about the x-axis, AND that surface area has a definite value (it certainly isn't undefined). Edit: Oh and no...

Hello there. Suppose I have a function: y=3x^{2/3}-1 I want to find the surface area of the solid formed when the part of the curve between x=0 and x=8 is revolved about the x-axis.The curve crosses the x-axis at a point (1/3)^{3/2} The derivative of the function is...

i mean if i integrate with respect to dy. then take the limits -100pi to 100 pi, that would give an answer, what would be the physical meaning of that answer?

but supposing i integrate sine inverse the function, (i can do that can't i?) THEN i apply the limits of integration from -100pi to 100pi (which are not Actually in the range of the function), will that give me the arc length?

OK, I'm starting to get it a bit. A function, should only have one y value for each x value, so inverse sine is a function if and only if we restrict the range (i.e.we make it the principal inverse sine function). BUT if we consider sine inverse (the relation; which has an unlimited range)...

Thanks for the quick reply arildno. ButI still don't get it, I mean x runs along both half circles doesn't it? both upper and lower AND our function (x^2+y^2)=R^2 accounts for both the semi circles, so shouldn't it's integral ALSO account for both half circles?

Hello there, suppose i want to find the arc length of a circle x^2+y^2=R^2 using integration, implicitly differentiating the equation, i find y'=-(x/y) now, arc length (circumference)= (\int \sqrt{1+y'^2}dx putting the value of y'=-(x/y) and substituting for y^2 from the equation of the...

Homework Statement A cylinder with an open top is to be constructed with a predetermined volume of 1metre cube. the base of the cylinder is to be cut from a sqaure sheet of material, and the rest of the square sheet is to be discarded, find the dimension which minimize the material used...

suppose a ball is moving with initial velocity, v towards a wall, and it rebounds with velocity -v, then the change in momentum of the ball is -2mv, which is the same as the change in momentum of the wall, BUT the wall is held in place by the forces between it and the floor, roof etc. and thus...

Hi jarle, if it's not valid for x^3, why should it be valid for x^2, how i see it, taking anything common from under the root is the same as multilying and dividing by that factor, so if i divide and multilpy by x^2, even then it shouldn't be valid for zero x as arlidno mentions, you still can't...