What the fuck am I doing wrong?

[Jimmie713]

clear all
clc
% Data
syms t
v=((1\(60^2))+0.8*t)^(-0.5);
T0=0;
T1=4;
S0=0;
%Velocity
vT1=((1\(60^2))+0.8*T1)^(-0.5);
% Position
s=int(v, T0,T1);
% Acceleration
a=diff(v,t);
t=T1;
a=eval(a);
% Display results
vT1
s
a
% End

Afterwards it says some shit about passing floating point values.
When I run it on Matlab it gives me the wrong values.  I'm about to punch my
computer




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