**@Vikrant : why error <=10^-8**

**Why not 10^-7 ??**

**We need only upto 7 decimal places !!**

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The trapezoidal method is used to evaluate the numerical value of $\int_{0}^{1}e^x dx$. Consider the following values for the step size h.

- 10
^{-2} - 10
^{-3} - 10
^{-4} - 10
^{-5}

For which of these values of the step size h, is the computed value guaranteed to be correct to seven decimal places. Assume that there are no round-off errors in the computation.

- iv only
- iii and iv only
- ii, iii and iv only
- i, ii, iii and iv