Un espejo cóncavo suministra de un objeto real situado a 60cm del vértice, una imagen real situado a 20 cm del vértice. Calculo: a) la distancia focal del espejo; b) el radio de curvatura del espejo; c) el aumento lineal transversal. *

the answer is a. hope this .

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 .

= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation