My first statement In our institute often held scientific conferences. Students can present and discuss their work. In the first year of the institute, I was afraid to speak, so I just went as a viewer. I was very inspired by a conference on programming. There I learned a lot of interesting things. But most of all I liked the scientific work about medical software. In the second year I took part in a conference on mathematical analysis. My teacher told me to take the theme of the use of integrals in the economy. I'm more than a month to prepare for it: looking for information on the topic of economics and mathematical analysis, studied it, decided two logarithmic problems, made a presentation with animation, the teacher helped a lot, I came to her class-room and we wrote my speech. I got more knowledge and have fun. When the day of conference came, I very nervous, because it was my first time. The speakers and viewers ware placed in a large audience. When it was my turn, I opened presentation and began to speak, the excitement was gone. I recite how to use definite integrals to find consumer surplus. The audience listened to me attentively. After my presentation, I will answer all questions. I was proud of myself.