<![CDATA[Derivatives are one of the chapters in mathematics learning in which there are derivative sub-applications. Derived applications are examples of material problems in everyday life that are solved by using mathematics. One example is in the industrial world, where a factory can calculate a minimum expenditure to get a big profit. That way it can be seen that derivative applications are very important to learn. But in reality students are still having difficulty working on the questions given. This can be seen when the students are given the problem still cannot work. Students' ability to solve questions is different. Basically, the problem can be known early on, one of the ways to do fingerprint tests. From the results of the work of students, researchers are inspired to analyze the students' mathematical logical thinking skills in solving problems, this is done to look for further learning solutions so students can understand derivative application material that is very useful in everyday life. This study uses a qualitative research approach with descriptive qualitative research, namely by analyzing existing data to obtain information about students' mathematical logical thinking skills in solving derivative application questions based on fingerprint patterns. The results of this study were students with archetype fingerprint patterns were able to meet 2 indicators of mathematical logical thinking ability that is able to change into mathematical sentences in writing, oral, and image and able to provide evidence or reason for the correcness of the solution. Keywords: mathematical logical thinking, fingerprint patterns, derivative applications.]]>
