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Date: 20-7-2019
1387
Date: 29-8-2019
2976
Date: 20-6-2019
1217
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By analogy with the tanc function, define the tanhc function by
(1) |
It has derivative
(2) |
The indefinite integral can apparently not be done in closed form in terms of conventionally defined functions.
It has maximum at , and positive inflection point at the solution to
(3) |
which is 0.919937667... (OEIS A133919).
It has a unique real fixed point at 0.82242927726... (OEIS A133918).
REFERENCES:
Sloane, N. J. A. Sequences A133918 and A133919 in "The On-Line Encyclopedia of Integer Sequences."
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علامات بسيطة في جسدك قد تنذر بمرض "قاتل"
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أول صور ثلاثية الأبعاد للغدة الزعترية البشرية
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مدرسة دار العلم.. صرح علميّ متميز في كربلاء لنشر علوم أهل البيت (عليهم السلام)
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