Funções estudadas no primeiro ano do ensino médio e suas aplicações

Abstract

Despite the evolution of information technology, which has changed the mode of access to all types of content and also the behavior of people, making them more autonomous in their daily research and activities, the difficulty with mathematical reasoning is common. An example of this is found in the study of functions. This content appears throughout most of high school. What can be seen from the contact with the students is that frustration clearly appears when the questions “ what is this teacher for?” or “ why study it if I will never use this?” echo the air. Although mathematical tools are available to solve various life circumstances, the perception and use of these instruments is not so obvious in practice. In this sense, the objective of this work is to study the general concept of function, and the linear, quadratic, exponential and logarithmic functions, studied in the first year of high school, to verify the application of these functions to everyday situations, since the most evident in calculating the price to pay for a stuff or a service, loans or measurements in construction, or even in cooking recipes.