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UFM Pure
Hyperbolic functions
Q16
OCR MEI Further Pure Core 2021 November — Question 16
Exam Board
OCR MEI
Module
Further Pure Core (Further Pure Core)
Year
2021
Session
November
Topic
Hyperbolic functions
16
Show using exponentials that \(\cosh 2 u = 1 + 2 \sinh ^ { 2 } u\).
Show that \(\int _ { 0 } ^ { 2 } \frac { x ^ { 2 } } { \sqrt { 4 + x ^ { 2 } } } \mathrm {~d} x = 2 \sqrt { 2 } - 2 \ln ( 1 + \sqrt { 2 } )\).
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