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ctmusicgirl7
 3 years ago
How do I isolate the x in y = 4x  x^2?
ctmusicgirl7
 3 years ago
How do I isolate the x in y = 4x  x^2?

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hartnn
 3 years ago
Best ResponseYou've already chosen the best response.3why do you need to isolate x from there ?

ctmusicgirl7
 3 years ago
Best ResponseYou've already chosen the best response.0I need to express the function in terms of y

IsTim
 3 years ago
Best ResponseYou've already chosen the best response.0Maybe it's just really late....but isn't that already "y"?

ctmusicgirl7
 3 years ago
Best ResponseYou've already chosen the best response.0...ok i meant in terms of x then whoops

IsTim
 3 years ago
Best ResponseYou've already chosen the best response.0Oh. Ha ha. Made me confused.

ctmusicgirl7
 3 years ago
Best ResponseYou've already chosen the best response.0basically i need to turn it into a "x=" form instead of "y="

IsTim
 3 years ago
Best ResponseYou've already chosen the best response.0Herrhhh....What grade/course level is this?

ctmusicgirl7
 3 years ago
Best ResponseYou've already chosen the best response.0I actually need this for a calculus proble, but I'm having a brain fart.

IsTim
 3 years ago
Best ResponseYou've already chosen the best response.0OH..so ln and e^x and all that?

ctmusicgirl7
 3 years ago
Best ResponseYou've already chosen the best response.0i need to find the radii of the "outer circle" and "inner circle" of the cross section that looks like a donut, so in order to express the radius in terms of the equation, i need it in terms of "x="

IsTim
 3 years ago
Best ResponseYou've already chosen the best response.0Or do you have to do derivatives too?

ctmusicgirl7
 3 years ago
Best ResponseYou've already chosen the best response.0I'm using integrals because I need to find the volume of a graph rotated around the y axis

binarymimic
 3 years ago
Best ResponseYou've already chosen the best response.1why dont you just complete a square

IsTim
 3 years ago
Best ResponseYou've already chosen the best response.0Wait..does that diagram incldue x,y, z planes, or is that just 2D?

ctmusicgirl7
 3 years ago
Best ResponseYou've already chosen the best response.0It should be 3D. Okay, the reason why I'm asking this "x isolation" question is because I need to find the volume of the graph of y = 4x  x^2 rotated around the yaxis and bounded by y=0.

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.3completing the square will do it., do you know how to ?

ctmusicgirl7
 3 years ago
Best ResponseYou've already chosen the best response.0That's the whole problem I'm working on right now.

ctmusicgirl7
 3 years ago
Best ResponseYou've already chosen the best response.0I tried using the quadrative formula, but I got a numerical answer. Am I using it wrong? I'm having a big brain fart right now T_T

binarymimic
 3 years ago
Best ResponseYou've already chosen the best response.1if you ever need to solve a quadratic just complete a square

binarymimic
 3 years ago
Best ResponseYou've already chosen the best response.1in this case you need to solve for x, so complete a square to do it o_o

ctmusicgirl7
 3 years ago
Best ResponseYou've already chosen the best response.0I'm not trying to solve it though. I need to have the x isolated :( Solvng it gives me a numerical answer.

ctmusicgirl7
 3 years ago
Best ResponseYou've already chosen the best response.0I feel really stupid right now lol

IsTim
 3 years ago
Best ResponseYou've already chosen the best response.0Hey, don't say that, or I'll feel stupid for not remembering anything.

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.3let me give you first few steps.... y= 4xx^2 = (x^24x+44) y = (x2)^24 now can you isolate 'x' ?

binarymimic
 3 years ago
Best ResponseYou've already chosen the best response.1they condition us to grow accustomed to f(x)! f(y) is just as important =[

ctmusicgirl7
 3 years ago
Best ResponseYou've already chosen the best response.0GOD BLESS YOU HARTNN lol

ctmusicgirl7
 3 years ago
Best ResponseYou've already chosen the best response.0Thank you everyone, I've got it now :) haha
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