In Matlab:

At the initial velocity vo, the object thrown vertically and the height h is reached at time t, where h = vo * t 0.5 * g *t^2. The program can be written to calculate the time t required to reach a specified height h; for a given value of vo. The input to this function should be h, vo, and g. Test your function with the conditions h = 120m, vo = 50 m/s, and g = 9.81 m/s2. Interpret both answers.

This code (below) was given as the answer, but I can't seem to make it work for me. Can someone explain to me what is missing or what I'm doing wrong. It shows "Error: Function definitions are not permitted in this context." Can someone explain what this means.

code:

function[t] = time1(h,v,g)

syms t1;

a= solve(v*t1-0.5*g*t1^2-h, t1)

t=a