I use the solve commant. The restult is a function with y as variable.

But when I want to use that function, the variable is not recognized.

How can this be fixed?

solve_no_variable_v1.mw

I am trying to plot the shearforce of a hollow section circular beam along the hight of the cross section.

I don't seem to be able to solve the equation. I get the message:"Warning, solutions may have been lost"
Can anyone help?

The tricky part is the distance of the "point of grafity of the area above y' to the 'point of grafity of the cross section (y=0)'. This distance is a function of y and is called y_

this is de code: M_V_as_function_of_hight_cc__temporary.mw

restart: with(LinearAlgebra): with(plots, textplot, display): #Digits :=5: evalf(%): with(RealDomain):
Rout:=168.3/2:
Rin :=Rout-12.5:

T:=V*Q/(II*b):
Q:=A_*y_:
bout:=2*sqrt(Rout**2 - y**2):
bin:=piecewise( y<Rin,2*sqrt(Rin**2 - y**2)  ,  y>=Rin,0):
#bin:=Re(2*sqrt(Rin**2 - y**2)):
b:=bout-bin;
A_ :=piecewise(  y<=0,0   ,    y<Rin,evalf( int(b ,  y=y..Rout ) ) ,    y>=Rin,int(bout , y=y..Rout)    ,    y>=Rout,0);
y:=y_: AA_:=A_;
y:='y':
eq1:=2*AA_ = A_:
sol1:=solve(eq1, y_ );
y_ := sol1:
y_;
#plot(y_,y=0..Rout);

Hello,

I just want to put the integration constands to zero manually, but it does not seem to work. How can I do this?

Thank you in advance!

Hello,

I would like to make a function of two variables. It seems that what I can find online on how onthers do it, does not work with my. Can someone help? Here is the document, but it is very simple. eq_of_two_var.mw

Hello,

When I typ:

> phi; kappa;

It gives symbols φ and K.

I do not want this, I want the words phi and kappa.

How do I turn this off?

I understand it has something to do with SYMBOL or a Palette?
I see a Palette left named 'Greek' or 'Trigonometric & Hyperbolic' that have phi in them, but how do I delete a Palette (If that is how I stop these symbols)?

I'm not really good with the software, I just use it for some school work.

Thank you in advance for your help!