A function $f(x)$, that is smooth and convex-shaped between interval $\left(x_l, x_u\right)$ is shown in the figure. This function is observed at odd number of regularly spaced points. If the area under the function is computed numerically, then
- the numerical value of the area obtained using the trapezoidal rule will be less than the actual
- the numerical value of the area obtained using the trapezoidal rule will be more than the actual
- the numerical value of the area obtained using the trapezoidal rule will be exactly equal to the actual
- with the given details, the numerical value of area cannot be obtained using trapezoidal rule