Recent content by The_Chromer

Nice going.

Try drawing a picture of the volume that you're trying to find. When I took multi-V, I noticed that helped me visualize the question better, which is essential to setting up your integral equation.

Weird. I tried evaluating your integrals, and I got (1/6)-(-3)=(19/6). See what you get by evaluating the second integral again. I don't know if I made a mistake or not.

Thank you so much for your help. I reached the final solution. I'll upload the results to show you as soon as I can. I have a final question as to what happened with a negative sign when I did a substitution, if you don't mind.

I just wanted to let you know that I haven't given up on the problem and am still working at it. I'll be back with results whenever I solve it.

Homework Statement Solve: Ut=kUxx U(x,0)=e^3x Homework Equations The Heat Equation: The Attempt at a Solution g(y) in the heat equation for this problem is e^3y. I'm having serious trouble solving this because my professor hasn't taught us the method, and it isn't in the...

It was correct - my online homework thing accepted it, lol. The algebra was just a little ambiguous.

You're right - I have new values for a and b a=5.520297 b=6.489422 Pretty sure I got it! Thank you for your help!

Even if I solve it, I still think there's something going wrong... I'll use a computer. I just tried doing it with matrices, lol.

Still haven't figured it out :/

These numbers are ugly... mind sticking around until I work it out? :)

I think I'm on the right track... thanks guys. Can you confirm if this is heading in the correct direction? a<81,-73>+b<-79,49>+<60,85>=<0,0> So, 81a-79b+60=0 -73a+49b+85=0 ?

Homework Statement [PLAIN]http://img703.imageshack.us/img703/8599/physicsks.png Homework Equations I'm considering cross product and dot product rules, yet I don't know where to begin with this one. The Attempt at a Solution I have two pages of scratch paper that is littered with...

Wow. So all the question asks for is the magnitude? sqrt(36)=6

Homework Statement Given vector A = i + j - k and vector B= i - j + k, calculate ||3A-B||. My work can be found here (I am not literate in Latex markups): http://img714.imageshack.us/img714/732/sixhomeworkproblems001.jpg I am unfamiliar with the notation of the double bars surrounding this...