1] find 4 and hence show that this is a Riemann sum. (c) Suppose R is a rule that integrates constants exactly over [â1
1]
and that f(x) is bounded and Riemann-integrable over [a
b]. Write down a formula for the composite rule (n à R)f and prove that limnââ (n à R)f = Z b a f(x) dx [6 marks] (d) What is the formula for (n à Q)f over [a
b]?