Q1- The distance traveled by an object at time t ≥ 0 is s = f(t) = t^2 where s is in meter (m) and t in seconds (sec). Find the instantaneous velocity of the object at t = 2sec

Q2- Find the natural domain of the given function

h(x) = 1/1-sinx

Q3- What are the points of discontinuity for the function f(x)=x+5/x^2-1 ?