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Questions Asked

UsukiDoll:
Group Title
matlab stuff.
 updated 13 days ago
 35 replies
 2 Medals
Mathematics

UsukiDoll:
Group Title
quick question ... if I have the quadratic u^2au+b^2 and the quadratic formula is ax^2+bx+c would a = u^2 b=a and c = b^2?
 updated 15 days ago
 72 replies
 No Medals Yet
Mathematics

UsukiDoll:
Group Title
give me some derivatives ( product rule, chain rule, quotient rule, and the other stuff.) [no gateway!]
 updated 16 days ago
 49 replies
 2 Medals
Mathematics

UsukiDoll:
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graph f(x) = (8x)/(1+2x)
 updated 17 days ago
 59 replies
 1 Medal
Mathematics

UsukiDoll:
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find the derivative of
f(x) = bxe^{cx}
b and c are constants. weee
 updated 21 days ago
 28 replies
 No Medals Yet
Mathematics

UsukiDoll:
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draw a bifurcation diagram
x' = x^3x+lambda where lambda is a parameter.
 updated 22 days ago
 90 replies
 No Medals Yet
Mathematics

UsukiDoll:
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dx/dt=x(a^2x^2). There's two variables! ugh if x is a dependent variable and a is a varying parameter, how am I going to graph it on the x …
 updated 23 days ago
 8 replies
 1 Medal
Mathematics

UsukiDoll:
Group Title
dan, I love you
 updated 26 days ago
 221 replies
 5 Medals
Mathematics

UsukiDoll:
Group Title
What is the process of nondemensionalizing an equation? My attempt in in the link http://math.stackexchange.com/questions/1126313/whatisth…
 updated one month ago
 No Medals Yet
Mathematics

UsukiDoll:
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I am trying to introduce two parameters: initial condition x0 and time step h, so I tried to do what the example from the text file did, but…
 updated one month ago
 37 replies
 1 Medal
Mathematics

UsukiDoll:
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Anyone out there uses Matlab?!!! I need help with adding a parameter so the code can reproduce the number of days with the initial condition…
 updated one month ago
 1 reply
 No Medals Yet
Mathematics

UsukiDoll:
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First order ode... dr/dt=a/pbr/3p
 updated one month ago
 152 replies
 4 Medals
Mathematics

UsukiDoll:
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ode refresher and yes I know it's a separable one!
dy/dx=yy^2
 updated one month ago
 107 replies
 6 Medals
Mathematics

UsukiDoll:
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How to find a solution for the heat equation that satisfies the Boundary Conditions and the Initial Condition.
 updated 2 months ago
 69 replies
 1 Medal
Mathematics

UsukiDoll:
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How to find the inverse fourier transform for the heat equation. ???
 updated 2 months ago
 6 replies
 No Medals Yet
Mathematics

UsukiDoll:
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What is the fourth derivative of
…
 updated 3 months ago
 48 replies
 3 Medals
Mathematics

UsukiDoll:
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@dan815 are you there? I have a pde problem
 updated 3 months ago
 32 replies
 1 Medal
Mathematics

UsukiDoll:
Group Title
integration by parts problem see link... How do I tackle this since this is the only problem I have
Keep in mind we are integrating with re…
 updated 5 months ago
 22 replies
 2 Medals
Mathematics

UsukiDoll:
Group Title
quick question how do I change e^C to C for
$e^{lny}=e^{x+C}$
…
 updated 5 months ago
 47 replies
 8 Medals
Mathematics

UsukiDoll:
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http://math.stackexchange.com/questions/931921/findtheparticularsolutionofux2uy4uexysatisfyingthefollowings
 updated 5 months ago
 29 replies
 No Medals Yet
Mathematics

UsukiDoll:
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http://math.stackexchange.com/questions/930314/findasolutiongxthatsatisfiesthepdeux3uyu1
 updated 5 months ago
 7 replies
 No Medals Yet
Mathematics

UsukiDoll:
Group Title
find some constants $a$ and $b$ (not both zero), such that $u(x,y)=f(ax+by)$ is a generic solution, where $f$ is an arbitrary $C^1$ function…
 updated 5 months ago
 44 replies
 2 Medals
Mathematics

UsukiDoll:
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http://math.stackexchange.com/questions/927336/usingseparationofvariablestosolveutt16uxxuxt
 updated 5 months ago
 12 replies
 No Medals Yet
Mathematics

UsukiDoll:
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suppose I want to multiply 2 x 5 in base 2. I know how to create the table but then I am stuck. I know 2 x 5 = 10 but that's base 10. I don'…
 updated 5 months ago
 58 replies
 3 Medals
Mathematics

UsukiDoll:
Group Title
http://math.stackexchange.com/questions/923137/findasolutiontolaplacesequationthatsatisfiespolarcoordinatesandshow
 updated 5 months ago
 110 replies
 1 Medal
Mathematics

UsukiDoll:
Group Title
Finding solutions that would satisfy the wave equation and Laplace equation ...pdes
see attachments
 updated 5 months ago
 14 replies
 1 Medal
Mathematics

UsukiDoll:
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pde example problem
 updated 6 months ago
 22 replies
 3 Medals
Mathematics

UsukiDoll:
Group Title
What is the least number of weights required to weight any integral number of pounds up to 63 pounds if one is allowed to put weights in onl…
 updated 6 months ago
 84 replies
 2 Medals
Mathematics

UsukiDoll:
Group Title
number theory proof problem regarding Euclid's Division Lemma
 updated 6 months ago
 107 replies
 4 Medals
Mathematics

UsukiDoll:
Group Title
http://math.stackexchange.com/questions/864114/findasolutiontoalinearsystemusingthedoperatorandmethodofeliminatio
 updated 7 months ago
 53 replies
 2 Medals
Mathematics
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