The purpose of this thesis is to find out the level of understanding of high school students on the inverse function. The result of this thesis is expected to provide the background on cognitive level of students and information of level of understand...
The purpose of this thesis is to find out the level of understanding of high school students on the inverse function. The result of this thesis is expected to provide the background on cognitive level of students and information of level of understanding to teaches when inverse function is instructed at the school.
In order to solve the tasks, this thesis has asked teachers in mathematics in high schools with the questionnaires consisted of 9 questions for 70 students in two classes of the second year students in ◌◌ High School in Daegu City. The correct answers and wrong answers were classified as intended by the researcher with certain purpose. On the basis of the foregoing, the conclusion of this thesis is summarized as follows:
First, when the definition of the inverse function is taught, it has to provide the opportunity to express the words, writings, graph and others accurately state in class for the one-on-one response condition, domain and range. In addition, it would be desirable to have the time to read along with students for classifying and reading the signs of inverse function and signs of inverse numbers.
Second, many questions in textbook or study aids deal with the domain and range in the real number group and this would be prudent to present diverse questions to determine the existence of the inverse function if it is different group.
Third, many students did not know the reason of changing during the process of seeking for the inverse function and the reason for the inverse function to be symmetric for that it would be prudent to provide the opportunity to think about why such a process is required without mechanically memorize them.
Fourth, in the event of drawing up the inverse function graph of certain function, make sure not to draw mechanically for symmetric . In graph, it is desirable to instruct the decision of the inverse function existence as well.
Fifth, in oder for the inverse function of exponential function to be the log function, the domain and range of the exponential function has to be presented as the group to fit into the existing requirement, and many students are familiar with the symmetric , but they are unable to apply the properties in questions that it would be prudent to provide the experience to apply in various questions.
The implications from the conclusion of this thesis is shown as follows:
First, in inverse matrix, differentiation and integration, it needs to study for analyzing the level of understanding on the inverse function for students, and the study may need to be generalized by extending the subject of studies and the questions in the questionnaire.
Second, on the basis of the result of this study result, there is a need for diverse class model or learning materials to be researched or developed.