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## HP 6s Calculator - Hyperbolic and Logarithmic Functions in the HP 6s Calculator

Introduction
This document demonstrates how to use the hyperbolic and logarithmic functions on the HP 6s calculator.
Calculator symbol key
This document uses the following text to represent symbol keys.
 Key Description Text representation Divide divide Square root SQRT Square root key SQx X root of y XROOT
Hyperbolic functions
 Keys Display Function Press 3, [ . ], 6, HYP, then sin 18.28545536 sinh 3.6 = Press 2, [ . ], 5, HYP, then tan 0.986614298 tanh 2.5 = Press 1, [ . ], 5, X-M, HYP, cos, then - Press RM, HYP, sin, then = M 2.352409615 M 0.22313016 cosh 1.5 - sinh 1.5 = Press 30, INV, HYP, then sin-1 4.094622224 sinh-130 = Press [ . ], 88, INV, HYP, tan-1, divide, 4, then = 0.343941914 solve tanh 4x = 0.88 x = tan-10.88 / 4
Logarithmic functions
 Keys Display Function Press 1, [ . ], 23, then log 0.089905111 log 1.23 (=log10 1.23) = Press 64, log, divide, 4, log, then = 3 solve 4x = 64 x = log64/log4 Press 456, X-M, log, divide, RM, In, then = M0.434294481 log 456 (divide) In 456 = Press [ . ], 4, INV, 10x, +, 5, x, 3, +/-, INV, ex, then = 2.760821773 100.4 + 5 (dot) e.3= Press 5, [ . ], 6, yX, 2, [ . ], 3, then = 52.58143837 5.62.3= Press 123, INV, XROOT, 7, then = 1.988647795 1231/7 (= 7SQRT123) = Press (, 78, [ - ], 23, ) yX, 12, +/-, then = 1.305111829 -21 (78 -23)-12= Press 3, yX, 12, +, 10, INV, eX, then = 553467.4658 312 + e10=

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