Recent content by lalah

For an example, there are better ways to explain how how use integration than to give me the definition, using symbols I've never seen before, and without explaining what those symbols mean. I'll read it, and not realize why they used alpha and beta instead of just plain ol' "a" and "b." Of...

Is engineering for me? I'm a rising freshman going into electrical engineering. I like "creation." I like making things, making things work, and fixing things. And I like working with my hands. I like "normal hobbies" like knitting/crocheting, cooking, and sewing, but I also like going doing...

I am currently studying multivariate calculus, and quite frankly, I'm not doing well. I am currently using Thomas' Calculus, 11/e media upgrade by Pearson. I don't like this book. The text is 75% theory and 25% simple examples, too few exercise problems, and the explanation is just too difficult...

A rough pencil sketch gets me cube-like shape that's getting rounder. The volume is a triple integral. V=\int\int_D\int dV. I'm having trouble determining the limits, or setting up the problem for that matter. V = \int_0^3\int_0^{\sqrt{9-x^2}}\int_0^{\sqrt{9-y^2}}dz dy dx?

Oh yes, I get it now. Thanks! :)

Homework Statement Find the volume V of the solid bounded by the graph x2+y2=9 and y2+z2=9 Homework Equations The Attempt at a Solution When I started this problem, I thought it was a perfect sphere with the center points (0, 0, 0). And then I thought, "Why do I need calculus, it's...

I'm suck on that step. How do you determine which formulas to graph? I'm looking at the equations and inequalities, but I can't arrive to that step. I can do reversing of integration, but this is the pothole in the bridge.

Homework Statement I'm trying to reverse the order of integration of \int_0^{81}\int_{y/9}^{\sqrt{y}} dx dy first integral is from 0 to 81 second integral is from y/9 to \sqrt{y} The problem is, I identified the inequalities for the regions of integration, but I'm having problems...