Casio CLASSPAD 330 3.04 - Manual (Page 131)

20060301
I Hyperbolic Functions (sinh, cosh, tanh) and Inverse Hyperbolic Functions
(sinh –1 , cosh –1 , tanh –1 )
Problem
Use this keyboard:
Operation
mth abc cat 2D
sinh3.6 = 18.28545536 TRIG Func  3.6 U
cosh1.5 – sinh1.5
= 0.2231301601 TRIG Func  1.5  1.5
U
e –1.5 = 0.2231301601* G MATH Func G C 1.5 U
cosh –1 (
20
15
)
= 0.7953654612
TRIG Func 20  15 U or
- 20 A
15 U
Solve for x given
tanh(4 x ) = 0.88.
= 0.3439419141
TRIG Func  0.88  4 U or
- 
0.88 A 4 U_
* This problem checks whether cosh x M sinh x = e M x . Solving the problem above this one
(cosh1.5 – sinh1.5) and comparing it with this problem’s solution shows that they are equal.
2-4-4
Function Calculations
x =
tanh –1 0.88
4