how do I solve a non linear function

Hi I am trying to solve this function but I keep on getting a warning sign I am unsure to howto put solve for a non liner function

syms t
y = 4*sin(2*pi*t) + exp(-t)./t

y = 

eqn = y -- 0

eqn = 

solv =solve(eqn,t)

Warning: Unable to solve symbolically. Returning a numeric solution using vpasolve.

solv = 

98.5

figure 
fplot(y,[-3 10])
grid 

[Torsten]

What do you want to see as result from "solve" ?

An explicit formula for all zeros of your nonlinear function ? Such a formula does not exist.

All zeros in between a certain range as numerical values ? Such an option for a solver does not exist.

One zero of the function ? vpasolve gives you one such value out of an infinite number of possible solutions.

[sumaiya hossain]

Thank you so much. The vpasolve instead of solve worked! :)

[Torsten]

You can restrict the search for a solution to a specific interval, e.g.

syms t
y = 4*sin(2*pi*t) + exp(-t)./t;
eqn = y == 0;
solv =vpasolve(eqn,t,[0,1])

solv = 

0.54308725386344674331298509227806

solv =vpasolve(eqn,t,[1,2])

solv = 

1.505862532193485343436982696241

figure 
fplot(y,[0.1 2])
grid