Find the average value of f left parenthesis x right parenthesis equals fraction numerator x over denominator x squared plus 1 end fraction over the interval left square bracket 0 comma 3 right square bracket. a.) fraction numerator ln 10 over denominator 2 end fraction b.) fraction numerator ln 10 over denominator 3 end fraction c.) fraction numerator ln 10 over denominator 6 end fraction minus 1 over 6 d.) fraction numerator ln 10 over denominator 6 end fraction