Hello my dear friends:

i will obtain value f(4) from below equation:(f is funciton of t)

f[0](t)=a*cos(omega*t)
f[n+1](t)=f[0](t)+(1/omega)*int((omega^2*f[n](tau)-f[n](tau)^3)*sin(omega*(t-tau)),tau=0..t)

THANKS...

Hi:

how obtain value a4 from below equation in maple:

a[0]=1

a[n+2]=a[0]+a[n+1]

Hi:

how i can dimensionless a equation in maple?is there direct method for dimensionless equation in maple?for example i must dimensionless the below equation:

c1*f(x, t)+c2*(diff(phi(x, t), x))+c3*(diff(w(x, t), x, x))+c4*(diff(w(x, t), t, t)) = 0

dimensionless values are defined as:

X=x/l , T=(k/h)*t

where:

c1,c2,c3,c4 are constant cofficients.

my new equation must in terms of: X and T.

Hi:

how calculate the integral the below function in maple?

int(sin(x)*delta(x-Zeta), x = 0 .. l)=sin(Zeta)

delta is delta function.

Hi:

i will linear the system of nonlinear ODE second order with maple,how to do it?