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Swhite

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Solving ODE in Maple...

Swhite 10 Maple
ode
March 30 2015
2 0

Hi Guys,

I am trying to solve the folling ODE in maple but am struggling to get to the correct solution. I first of all have the following equations;

Diff(V(x), [x]) = q(x)

Diff(M(x), [x]) = V(x)

theta(x) = Diff(v(x),[x])

M(x)=EI*theta(x)

Which give me the following;

q(x) = Diff(EI*(Diff(v(x), [`$`(x, 2)])), [`$`(x, 2)])

With thw boundary conditions;

M(l) = 0, M(0) = 0, v(0) = 0, v(l) = 0

The given solution is;

v(x)=(qx/24EI)*(x^3-2lx^2+l^3)

Anything that might point me in the right direction would be great!

Cheers

Steve

 

 

Fitting constants to equation...

Swhite 10 Maple
February 22 2014
3 5

Hi guys,

I am trying to fit some constants to an equation in maple but am very new to the software and am struggling somewhat to input he correct commands.

I have the following equation;

x=a(y^b)(z^c)

And I have data points for x, y and z

I need to calculate the best fit value for a, b and c based on this data.

These constants are material properties for calculating creep in a structures and the data is somewhat dirty, therefore my hand calcs lead to an unsolvable results so best fit values are my only hope!

Any suggestions or a nudge in the right direction would be wonderful!

Thanks 

Steve

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