Why is the Harappan drainage system considered a planned and complete drainage system? Explain.
Why is the Harappan script called an enigmatic script? Explain.
Mention any two Harappan sites.
Draw a rough sketch for the curve $y = 2 + |x + 1|$. Using integration, find the area of the region bounded by the curve $y = 2 + |x + 1|$, $x = -4$, $x = 3$, and $y = 0$.