MathGeek
 

Attachment 35643 Differential equations in your domain?

i hate de had to take it twice

Man when I add salt to da gumbo den I taste it
Da mat never work right cuz o da okra

LOL... That is funny!

sgib i use cramster to help me with all homework problems it has a lot of detail when working out a problem

Yes, I do a bit of differential equations.

The problem at hand is a bit ambiguous from the photo due to a combination of the blurry photo and not having the original statement of the word problem.

Please tell me if I have the original problem triangulated correctly. Do you have 100 gallons of salt water in some container with an original concentration of 1/4 lb of salt per gallon? Do you have fresh water flowing in at a constant, yet unspecified rate of r gal/min? Is the task at hand to compute the remaining quantity of salt at time t?

If this is the intent of the problem, you have a lot of good work and correct steps, but you should be able to write down a solution Q(t) that no longer contains Q0. In other words, you have all the information to substitute in a number for Q0. Of course, if I have interpreted the problem incorrectly, then I need some clarification on what is given and hwhat is asked for.

Yuk...don't miss that crap

:rotfl::rotfl::rotfl::rotfl:

Ducktrickster can help you with that.

Holy smokes!! Looking at that up there just reassured me that I am STUPID!

I mean, I could probably doodle you an Elmo on that paper or somethin but, past that, ya got me!

I was good at math, until they decided to throw the alphabet in there....

Same here. It was much easier the second time around. I actually understood it

Man I hated DE, I think I got by with a D and called it go. Definately not a class to take twice.

Differential equations seemed simple after I had completed Calc 1, Calc 2, Calc 3, and especially "Mathematical Methods in Physics" at LSU.

Dr. Paul Kirk made a MathGeek out of me in that Mathematical Methods in Physics course. I can hear him now, "A tensor must obey the tensor transformation laws." Huh? I still have no idea what a tensor really is other than obeying the tensor transformation laws and being able to be manipulated like a matrix (I'm good at linear algebra).

My head hurts

I did well in DE, but its amazing what ten years and thousands of beers does to your brain. I wouldn't even know where to begin.... I don't think I even seen an integral once since college.

i took de before calc 3 that could have been the problem

About half-way through Calc 3, the light finally went on regarding what an "instantaneous rate of change" really is and what the ideas of differentiation and integration really mean and how they are opposites. I finally understood the fundamental theorem of calculus.

Without these insights, de is just more meaningless manipulations of alphabet soup.

Done with cal 1,2,3. Math methods of physics. Physics 1&2 modern physics. Linear. Statistical inference. Diff e q and I'm done with all except EE classes. And yeah me and Cramster are pretty tight!

I'm with ya Corey. I thought he was messing with math geek. Lol. This is real stuff ?