Recent content by omg precal

3^5 is indeed 243. Thanks, Doc Al.

Thanks!

that gives me 3^x = 243. using logarithms... x log3 = log 243 x = log 243/ log 3 x = 5 am i correct?

that's what the inverse does to the function?

First of all, sorry for asking so many questions. I do not want answers, just a method of solving them. Homework Statement For the exponential function f(x) = ab^x, suppose f(2) = 2 and f(4) = 18. a. Find a and b. b. Find f^-1(54), the inverse function. Homework Equations None...

Cost Function = 16l + 16h + 4lh Cost Function (h) = 160/h + 16h + 40 Height = 10 Length = 1 Width = 4 16(10) + 16(1) + 4(1)(10) = 216 dollars 16(100) + 16(0.1) + 4(0.1)(100) = 1641.60 dollars (smaller you go, much bigger the price gets!) 16(5) + 16(2) + 4(5)(2) = 156 dollars...

This is, by far, the hardest summer assignment I've ever had... But thanks to you guys, I managed. =]

Wow. I was blinded by stupidity. Thank you! No problem at all. Thanks a lot for helping, though.

|:-)

:confused::confused::confused: wouldnt 0 length mean it is 2-dimensional? infinity height... that would be tall :smile: I think I'll just leave it blank. o.O

and wouldn't that also screw up my domain for H? or would it be all real numbers lol

yeah... i spent a good hour trying to find some kind of non existent hint in the wording or just simply another solution, but i couldnt. i just hope my teacher made a mistake, i don't want to do bad on it.

done em all, thanks roco

yeah... this is one of the best and most useful forums I've ever visited... and the people are nice.

that is awesome. i think I am going to join this forum later in life (if its still alive)