Hi all,
I have this integration in mathematica but I don't know why doest work.
Could you please help me?
Integrate[HeavisideTheta[0.1 - x], {x, 0, 100}]
Thank you so much for your help
thank you for your answer
but the problem is the function Y should be solved and then put in second equation and both of them have some adujstable parameters,
could you advise me more please.
Question about matlab
Hi,
I have question if you could answer me, I really appreciate it. I have an equation which I wan to solve it to experimental data \[Rho] = t*Y^.5*a + Y^.8/sqrt (1 + 4*Y)*t*a^2 where a is parameter which I want to obtain by fitting and t is vector that I know for each...
Thank you for your answer.
First most of the time Nsolve should have answer because it has physical meaning.other thing is that Y vary from 0 to 1just between these two number.do you think this make the program faster, at first I used Findroot but it doesn't work for this case.
Hi,
As you said I did that. The code seems to be correct and logical but I don't know where I am making mistake could you please advise me in this respect?
thanks
B[t_, Y_] := t*Y
F[t_, u_] := Block[{Y}, B[t, Y] /. FindRoot[1 - t*Y*u = 0, Y]]
Minimize[F[10, u], u]
I am doing this...
Hi,
I have faced another problem if you could answer me I would appreciate your kind help.
I have introduced this function
B[t_, Y_] :=
1/2 M^2 Y ^((-1 COMPLICATED FUNCTION OF Y AND t)
then
F[t_, u_] :=
Block[{Y}, t*B[t, Y] /. Solve[1 - (1 - u) Y == Y^2, {Y, 0}]]
Minimize[F[.1...
Hi all
I have written this statement but it doest work .could you please help me?
Derivative [1][Y] [t_] := Y[t] + Y[t]^2 + 5
Derivative [1][Y] [t_] := Y[t] + Y[t]^2 + 5
z = Y^((23 - 1)/8)
d = Y^(-34/8)
b = Y^(3/8)
v = Y^((8 - 3/8)/8)
x = 4/(5) (Y^(-7/8) - 1)
A[t_...
Hi
I have faced another problem I would appreciate it if you could answer me.I defined a derivative but when I differentiate I get wrong result.
Derivative [1][Y] [T_] := Y + Y^2 + 5
A[Y_, T_] := Y^2*T + M*Y
D[A[Y, T], T]
thanks
Hi
I have written this :
x[T_, Y_] := Y*T + Y^.5*T^2
f[T_, U_] := Block[{X, Y}, X [T, Y] /. Y ;
FindRoot[1 - (1 - U)*Y =
U* Y^(3.5) (1 + 3.14/Y)^.5, {Y, 0.01, 1}]]
f[100, 0.2]
but does not work.could you please help me to know why it doesn't work?
thanks
HI
I have this very easy Integral but mathmatica can't evaluate it.
could you please tell me why?
thanks
Integrate[Sqrt[c^2 + r^2 - 2*c*r*u], {u, 0, 1}]
Hi,
Thank you , but I think I define it before,when I inserted F[p_,k_].
could you please explain more how can I get correct result by this way?
Thank you very much