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Question: solve does not answer for equation???

Question:solve does not answer for equation???

torabi 85 Maple 2016
solve
November 27 2016
0

hi...why solve for this equation dos not answer?

thanks

4.mw
 

restart; dsys3 := {diff(w(x), x, x, x, x, x, x)+diff(w(x), x, x, x, x)+diff(w(x), x, x)+(1-2)*w(x) = -90, w(0) = 0, w(1) = 0, ((D@@1)(w))(0) = 0, ((D@@1)(w))(1) = 0, ((D@@2)(w))(0) = 0, ((D@@2)(w))(1) = 0}; dsol5 := dsolve(dsys3, numeric, abserr = .1, output = array([.5]))

array( 1 .. 2, 1 .. 1, [( 1, 1 ) = (array( 1 .. 7, [( 1 ) = (x), ( 2 ) = (w(x)), ( 3 ) = (diff(w(x), x)), ( 4 ) = (diff(diff(w(x), x), x)), ( 5 ) = (diff(diff(diff(w(x), x), x), x)), ( 6 ) = (diff(diff(diff(diff(w(x), x), x), x), x)), ( 7 ) = (diff(diff(diff(diff(diff(w(x), x), x), x), x), x)) ] )), ( 2, 1 ) = (array( 1 .. 1, 1 .. 7, [( 1, 7 ) = (HFloat(-1.3899459757465982e-7)), ( 1, 3 ) = (HFloat(4.5022670883498417e-8)), ( 1, 1 ) = (.5), ( 1, 6 ) = (HFloat(2.2858770405958895)), ( 1, 5 ) = (HFloat(2.6615438731474126e-8)), ( 1, 4 ) = (HFloat(-0.04747952956114616)), ( 1, 2 ) = (HFloat(0.0019672907400671725)) ] )) ] )

 (1)

"restart;w(x):=C1* (sinh(x))+C2* (cosh(x))+C3 *(sin(x))+C4 *(cos(x))+C5 *(sin(x))+C6 *(cos(x))+90"

proc (x) options operator, arrow; C1*sinh(x)+C2*cosh(x)+C3*sin(x)+C4*cos(x)+C5*sin(x)+C6*cos(x)+90 end proc

 (2)

A1 := evalf(subs(x = 0, w(x)))

90.+1.*C2+1.*C4+1.*C6

 (3)

A2 := evalf(subs(x = 1, w(x)))

1.175201194*C1+1.543080635*C2+.8414709848*C3+.5403023059*C4+.8414709848*C5+.5403023059*C6+90.

 (4)

A3 := evalf(subs(x = 0, diff(w(x), x)))

1.*C1+1.*C3+1.*C5

 (5)

A4 := evalf(subs(x = 1, diff(w(x), x)))

1.543080635*C1+1.175201194*C2+.5403023059*C3-.8414709848*C4+.5403023059*C5-.8414709848*C6

 (6)

A5 := evalf(subs(x = 0, diff(w(x), x, x, x)))

1.*C1-1.*C3-1.*C5

 (7)

A6 := evalf(subs(x = 1, diff(w(x), x, x, x)))

1.543080635*C1+1.175201194*C2-.5403023059*C3+.8414709848*C4-.5403023059*C5+.8414709848*C6

 (8)

solve({A1, A2, A3, A4, A5, A6}, {C1, C2, C3, C4, C5, C6})

``

solve*{A5, A6, C1, C2, C3, C4, C5, C6, 1.*C2+1.*C4+1.*C6, 1.*C2*upsilon^2-1.*C4*kappa^2-1.*C6*varsigma^2, C1*sinh(upsilon)+C2*cosh(upsilon)+C3*sin(kappa)+C4*cos(kappa)+C5*sin(varsigma)+C6*cos(varsigma), C1*upsilon^2*sinh(upsilon)+C2*upsilon^2*cosh(upsilon)-1.*C3*kappa^2*sin(kappa)-1.*C4*kappa^2*cos(kappa)-1.*C5*varsigma^2*sin(varsigma)-1.*C6*varsigma^2*cos(varsigma)}

 (9)

``

``

``


 

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