The function shown is the solution of the differential equation (assuming all initial conditions to be zero) is

$$\frac{{{{\text{d}}^2}{\text{y}}}}{{{\text{d}}{{\text{x}}^2}}} = 1$$

$$\frac{{{\text{dy}}}}{{{\text{dx}}}} = {\text{x}}$$

$$\frac{{{\text{dy}}}}{{{\text{dx}}}} = - {\text{x}}$$

$$\frac{{{\text{dy}}}}{{{\text{dx}}}} = \left| {\text{x}} \right|$$

Correct Answer: $$\frac{{{\text{dy}}}}{{{\text{dx}}}} = \left| {\text{x}} \right|$$

The pictorial view of the frustum of a square pyramid is shown in figure 'X'. Its top view, when viewed in the direction of the arrow, will look like which of the given alternatives 1, 2, 3 and 4?

$$\frac{1}{3}$$

$$\frac{2}{3}$$