01 Fig. 1.1 shows a diver working below the surface of a lake. The density of the water in the lake is 1000 kg / m 3 , the atmospheric pressure at the surface is 1.0 × 10 5 Pa and the gravitational field strength is 10 N / kg.
The diver inflates a balloon with air at a depth of 15 m and attaches the balloon to a tray of objects.
Calculate
(ii) the total pressure at 15 m below the surface of the lake.

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .

answeralert drivers who drift off the road;