(a)Find the linear approximation L1(x) of the function f(x)=sqrt(x+3) at a=1

(b)use linear approximate that you founf in part(a) to approximate sqrt(3.98)

(c)scetch the graph of both f(x) and L1(x) and use these to determine if estimate in part (b) is greater or less than the true value of sqrt(3.98)