Interval [a b] = [1 7]
f(x) = 1/x
Max f"(x) in [a b] is 2 only .. // f"(x) = 2/x^3
Error = (b -a)*h*h*max f"(x)/12. // given
= (7-1)*h*h*2/12
= h*h
Error <= 10^(-4) // given
h*h <= 10^(-4)
h <= 10^(-2)
(b - a)/n = h // n is no of trapezoid
(7-1)/n >=10^(-4)
n <= 600
MinimumMinimum value of n is 600..