fortran66 https://blog.hatena.ne.jp/fortran66/ fortran66のブログ https://fortran66.hatenablog.com/ ここで ]とおくと、 となるので、求めたい積分は となる。ただし なので よって、 となる。Inside Interesting Integrals: A Collection of Sneaky Tricks, Sly Substitutions, and Numerous Other Stupendously Clever, Awesomely Wicked, and Devilishly Seductive Maneuvers for Computing Nearly 200 Perplexing Definite Integrals From Physics, Engineering,… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Ffortran66.hatenablog.com%2Fentry%2F2018%2F06%2F05%2F014312" title="【メモ帳】積分 - fortran66のブログ" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> https://chart.apis.google.com/chart?cht=tx&chl=%0A%5Cbegin%7Balign%7D%0AI%26%3D%5Cint_0%5E1%7Bdt%5Cover%28t%5E2%2B1%29%5Csqrt%7Bt%5E2%2B2%7D%7D%5C%5C%0A%26%28t%3D%5Csqrt2%5Ctan%20x%2C%20dt%3D%5Csqrt2%281%2B%5Ctan%5E2x%29dx%2C%201%3D%5Csqrt2%5Ctan%20a%29%5C%5C%0A%26%3D%5Cint_0%5Ea%7B%5Csqrt2%281%2B%5Ctan%5E2x%29%5Cover%282%5Ctan%5E2x%2B1%29%5Csqrt%7B2%5Ctan%5E2x%2B2%7D%7Ddx%5C%5C%0A%26%3D%5Cint_0%5Ea%7B%7B%5Csqrt2%5Cover%5Ccos%5E2x%7D%5Cover%5Cleft%28%7B2%5Cover%5Ccos%5E2x%7D-1%5Cright%29%7B%5Csqrt2%5Cover%5Ccos%20x%7D%20%7Ddx%5C%5C%0A%26%3D%5Cint_0%5Ea%7B%5Ccos%20x%5Cover2-%5Ccos%5E2x%7Ddx%5C%5C%0A%26%3D%5Cint_0%5Ea%7B%5Ccos%20x%5Cover1%2B%5Csin%5E2x%7Ddx%5C%5C%0A%5Cend%7Balign%7D Hatena Blog https://hatena.blog 2018-06-05 01:43:12 rich https://fortran66.hatenablog.com/entry/2018/06/05/014312 1.0 100%