how do i solve for 't' ?

syms t 
assume([t] > 0);

eqn1 = (380/2) == 380.0 - 379.69109947074029287421462846085*exp(-1000842.1052631578947368421052632*t)*sinh(1000813.5574673472470455156078349*t)
 
solve(eqn1,t)

the result that i am getting is,

 
eqn1 =
 
190 == 380 - (6679596461298125*exp(-(8597168221130105*t)/8589934592)*sinh((4298461498715673*t)/4294967296))/17592186044416
 
Warning: Unable to find explicit solution. For options, see help. 
> In solve (line 317) 
 
ans =
 
Empty sym: 0-by-1
 
>> 

i want to find a constant value for 't'.

Answer 1

[madhan ravi]

I think there is no solution :

syms t
eqn1 = matlabFunction(380.0 - 379.69109947074029287421462846085*exp(-1000842.1052631578947368421052632*t)*sinh(1000813.5574673472470455156078349*t)-(380/2));
t=0:.001:10;
eqn1(t) % returns NaN everywhere

Answer 2

[Torsten]

Try

eqn1 = 190.0 == 380.0-379.69109947074029287421462846085/2*(exp((-1000842.1052631578947368421052632+1000813.5574673472470455156078349)*t)-exp((-1000842.1052631578947368421052632-1000813.5574673472470455156078349)*t))