| Exam Board | SPS |
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| Module | SPS FM (SPS FM) |
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| Year | 2021 |
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| Session | November |
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| Topic | Hyperbolic functions |
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6. In this question you must show all stages of your working. Solutions relying on calculator technology are not acceptable.
Find
$$\int _ { 1 } ^ { \infty } \frac { 1 } { \cosh \mathrm { u } } \mathrm { du }$$
giving your answer in an exact form.
[0pt]
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