please helps asap! thanks

Use linear approximation, i.e. the tangent line, to approximate \\/ 64.3 as follows: Let f(:z:) = . The equation of the tangent line to f(a:) at a: = 64 can be written in the form 3; = ma: + b Using this, we find our approximation for \\/ 64.3 is l___] . NOTE: For this part, give your answer to at least 9 significant figures or use an expression to give the exact