Question about bat

[Dakota]

In common usage in elementary geometry, cones are assumed to be right circular, where right means that the axis passes through the centre of the base (suitably defined) at right angles to its plane, and circular means that the base is a circle. Contrasted with right cones are oblique cones, in which the axis does not pass perpendicularly through the centre of the base. In general, however, the base may be any shape, and the apex may lie anywhere (though it is often assumed that the base is bounded and has nonzero area, and that the apex lies outside the plane of the base). For example, a pyramid is technically a cone with a polygonal base.

-- wikipedia

[argodad]

Originally Posted by Dakota

-- wikipedia

I once took an upper-level math course. I remember the professor saying, "We will integrate this over the surface of a four-dimensional cone with a spherical base ... as the size of the sphere approaches infinity." Try drawing that on a flat sheet of paper!

(I think that's the only thing I remember from the entire course.)

[NCASAUmp]

Originally Posted by argodad

I once took an upper-level math course. I remember the professor saying, "We will integrate this over the surface of a four-dimensional cone with a spherical base ... as the size of the sphere approaches infinity." Try drawing that on a flat sheet of paper!

(I think that's the only thing I remember from the entire course.)

Ugh, I had a Calculus II prof who would write an equation, start solving it, go all the way onto the next chalkboard and realize that he needed to start over.

Many trees were sacrificed that semester, but I passed. Barely.