Using an example show how a function in Python can return multiple values.

With the help of an example show how can you return more than one value from a function.

How is built-in function pow() function different from function math.pow() ? Explain with an example.

Read the passage below:

Nannu is a daily wage earner. He lives in Welcome Mazdoor Colony, a slum habitation in East Delhi. He lost his ration card and applied for a duplicate one in January 2004. He made several rounds to the local Food and Civil Supplies office for the next three months. But the clerks and officials would not even look at him, leave alone do his job or bother to tell him the status of his application. Ultimately, he filed an application under the Right to Information Act asking for the daily progress made on his application, names of the officials, who were supposed to act on his application and what action would be taken against these officials for their inaction. Within a week of filing application under the Right to Information Act, he was visited by an inspector from the Food Department, who informed him that the card had been made and he could collect it from the office. When Nannu went to collect his card next day, he was given a very warm treatment by the Food and Supply Officer (FSO), who is the head of a Circle. The FSO offered him tea and requested him to withdraw his application under the Right to Information, since his work had already been done.

What does Nannu’s example show? What impact did Nannu’s action have on officials? Ask your parents their experiences
when they approach government officials to attend to their problems.

A series of chords are drawn so that their projections on the straight line, which is inclined at an angle $a$ to the axis, are of constant length. Prove that the locus of their middle point is the curve:

$$ \left(y^{2} - 4 a x\right) \left(y \cos \alpha + 2 a \sin \alpha\right)^{2} + a^{2} c^{2} = 0 $$

The scalar product of two vectors is a mathematical operation that results in a scalar quantity. It is also known as the dot product.

Two examples of scalar product are:

1. When finding the work done by a force on an object, the scalar product of the force vector and the displacement vector is used.
2. Another example is the calculation of the angle between two vectors using their dot product.